Rugby Union - European Champions Cup - Leicester Tigers vs Racing 92 - Welford Road Stadium, Leicester, Britain - January 21, 2018 Leicester Tigers’ Sione Kalamafoni in action with Racing 92’s Wenceslas Lauret and Dimitri Szarzewski Action Images via Reuters/Andrew Boyers

Rugby Union - Saracens v Racing 92 - European Rugby Champions Cup Final - Grand Stade de Lyon, France - 14/5/16
Saracens' Billy Vunipola in action with Racing 92's Dimitri Szarzewski
Action Images via Reuters / Henry Browne
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Rugby Union - Saracens v Racing 92 - European Rugby Champions Cup Final - Grand Stade de Lyon, France - 14/5/16
Saracens' Billy Vunipola in action with Racing 92's Dimitri Szarzewski
Action Images via Reuters / Henry Browne
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France's Dimitri Szarzewski reacts during his Six Nations rugby union match against Italy at the Stade de France in Saint-Denis, near Paris, February 9, 2014. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT RUGBY)

Italy's Leonardo Sarto (C) fights for the ball with France's Jules Plisson (L) and France's Dimitri Szarzewski (R) during their Six Nations rugby union match at the Stade de France in Saint-Denis, near Paris, February 9, 2014. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (C) fights for the ball with Italy's Martin Castrogiovanni (R) during their Six Nations rugby union match at the Stade de France in Saint-Denis, near Paris, February 9, 2014. REUTERS/Gonzalo Fuentes (FRANCE - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (L) fights for the ball with Italy's Martin Castrogiovanni during their Six Nations rugby union match at the Stade de France in Saint-Denis, near Paris, February 9, 2014. REUTERS/Gonzalo Fuentes (FRANCE - Tags: SPORT RUGBY)

Dimitri Szarzewski of France tackled by Owen Franks of New Zealand's All Blacks during their rugby union test match in Christchurch, June 15, 2013. REUTERS/Anthony Phelps (NEW ZEALAND - Tags: SPORT RUGBY)

Dimitri Szarzewski of France charges against New Zealand's All Blacks during their rugby union test match in Christchurch, June 15, 2013. REUTERS/Anthony Phelps (NEW ZEALAND - Tags: SPORT RUGBY)

Dimitri Szarzewski (R) of France is tackled by Aaron Smith of New Zealand's All Blacks during their rugby union test match in Auckland, June 8, 2013. The All Blacks won the match 23-13. REUTERS/Nigel Marple (NEW ZEALAND - Tags: SPORT RUGBY)

France rugby players Morgan Parra (C), Nicolas Mas (L) and Dimitri Szarzewski (R) attend a training session at the Rugby Union National Centre in Marcoussis, south of Paris, February 21, 2013. France will face England for their third game of the Six Nations championship at Twickenham on Saturday. REUTERS/Charles Platiau (FRANCE - Tags: SPORT RUGBY HEADSHOT)

Wales' Mike Phillips (front) evades the tackle from France's Dimitri Szarzewski (L) and Louis Picamoles (R) during their Six Nations rugby match at the Stade de France in Saint-Denis near Paris, February 9, 2013. REUTERS/Charles Platiau (FRANCE - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (L) and Louis Picamoles tackle Wales Mike Phillips during their Six Nations rugby match at the Stade de France in Saint-Denis near Paris, February 9, 2013. REUTERS/Charles Platiau (FRANCE - Tags: SPORT RUGBY)

France rugby players Nicolas Masse (C) Dimitri Szarzewski and Jocelino Suta (R) attend a training session at the Rugby Union National Centre in Marcoussis, south of Paris, February 7, 2013. France will face Wales for their second game of the Six Nations championship in Paris on February 9, 2013. REUTERS/Charles Platiau (FRANCE - Tags: SPORT RUGBY)

France rugby players Morgan Parra (front) Dimitri Szarzewski (L) Damien Chouly (C) and Thierry Dusautoir (R) attend a training session at the Rugby Union National Centre in Marcoussis, south of Paris, February 7, 2013. France will face Wales for their second game of the Six Nations championship in Paris on February 9, 2013. REUTERS/Charles Platiau (FRANCE - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (C) struggles with Australia's Dave Dennis (L) during their team's rugby test match at the Stade de France stadium in Saint-Denis, near Paris, November 10, 2012. REUTERS/Gonzalo Fuentes (FRANCE - Tags: SPORT RUGBY)

French rugby union player Dimitri Szarzewski (C) walks with the ball as he trains with team mates during their side's captain's run practice session on the eve of their rugby test match against Australia at the Stade de France stadium in Saint-Denis, near Paris, November 9, 2012. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (L) tackles England's Alex Corbisiero during their Six Nations rugby union match at the Stade de France stadium in Saint-Denis near Paris March 11, 2012. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT RUGBY)

Italy's Quintin Geldenhuys (C) fights for the ball with France's Dimitri Szarzewski (L) and Italy's Alessandro Zanni during their Six Nations rugby union match at the Stade de France in Saint-Denis near Paris February 4, 2012. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (R) fights for the ball with Italy's Quintin Geldenhuys during their Six Nations rugby union match at the Stade de France in Saint-Denis near Paris February 4, 2012. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT RUGBY)

Italy's Quintin Geldenhuys (C) fights for the ball with France's Dimitri Szarzewski during their Six Nations rugby union match at the Stade de France in Saint-Denis near Paris February 4, 2012. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT RUGBY)

France players react after losing the Rugby World Cup final against New Zealand All Blacks at Eden Park in Auckland October 23, 2011. From L to R : Julien Bonnaire, Maxime Mermoz, Nicolas Mas, Julien Pierre and Dimitri Szarzewski. REUTERS/Mike Hutchings (NEW ZEALAND - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (L) and Fabien Barcella celebrate winning their Rugby World Cup semi-final match against Wales at Eden Park in Auckland October 15, 2011. REUTERS/David Gray (NEW ZEALAND - Tags: SPORT RUGBY)

New Zealand All Blacks' Israel Dagg (L) runs away from France's Dimitri Szarzewski (2) during their Rugby World Cup Pool A match at Eden Park in Auckland September 24, 2011. REUTERS/Bogdan Cristel (NEW ZEALAND - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (L) tackles New Zealand All Blacks' Richard Kahui during their Rugby World Cup Pool A match at Eden Park in Auckland September 24, 2011. REUTERS/Nigel Marple (NEW ZEALAND - Tags: SPORT RUGBY)

France's rugby union national team player Dimitri Szarzewski (R) stretches with teammates during a training session at Le Chambon sur Lignon, July 14, 2011, as part of a preparation for the upcoming 2011 World Cup in New Zealand. REUTERS/Jean-Paul Pelissier (FRANCE)

France's rugby union national team player Dimitri Szarzewski (C) passes the ball to partners during a training session at Le Chambon sur Lignon, July 14, 2011, as part of a preparation for the upcoming 2011 World Cup in New Zealand. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SPORT RUGBY)

France's rugby union national team player Dimitri Szarzewski rides his bike before a training session at Le Chambon sur Lignon during a preparation for the upcoming 2011 Rugby World Cup in New Zealand, July 12, 2011. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SPORT RUGBY)

France's rugby union national team player Dimitri Szarzewski passes the ball as he attends a training session at Le Chambon sur Lignon during a preparation for the upcoming 2011 Rugby World Cup in New Zealand, July 12, 2011.
REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SPORT RUGBY)

France's rugby union national team players Dimitri Szarzewski (2ndR), Dimitri Yachvili (R), Pascal Pape (L), Thierry Dusautoir (2ndL) and Louis Picamoles (C) play with a ball as they attend a training session at Le Chambon sur Lignon during a preparation for the upcoming 2011 Rugby World Cup in New Zealand, July 12, 2011.
REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SPORT RUGBY)

France's rugby union national team players Dimitri Szarzewski (C), Pascal Pape (R) and Julien Bonnaire (L) play with a ball as they attend a training session in Le Chambon sur Lignon during a preparation for the upcoming 2011 Rugby World Cup in New Zealand , July 12, 2011. REUTERS/Jean-Paul Pelissier (FRANCE)

France's rugby union national team player Dimitri Szarzewski stretches in a training session at Le Chambon sur Lignon during a preparation for the upcoming 2011 Rugby World Cup in New Zealand, July 12, 2011. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SPORT RUGBY)

France's rugby union national team players Dimitri Szarzewski (R) and Louis Picamoles (L) ride their bikes after a training session at Le Chambon sur Lignon during a preparation for the upcoming 2011 Rugby World Cup in New Zealand, July 12, 2011. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SPORT RUGBY)

France's rugby union national team players Dimitri Szarzewski (R), Louis Picamoles (L) and Guilhem Guirado (C) ride their bikes after a training session at Le Chambon sur Lignon during a preparation for the upcoming 2011 Rugby World Cup in New Zealand, July 12, 2011. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SPORT RUGBY)

France's rugby union national team player Dimitri Szarzewski rides his bike after a training session at Le Chambon sur Lignon during a preparation for the upcoming 2011 Rugby World Cup in New Zealand , July 12, 2011.
REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SPORT RUGBY)

South Africa's Bryan Habana gets his pass away as referee Bryce Lawrence takes a fall during the international rugby match against France at Newlands in Cape Town, June 12, 2010. Left is France's Dimitri Szarzewski. REUTERS/Mike Hutchings (SOUTH AFRICA - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (C) and the rugby union national team players attend a training session at the Rugby Union National Centre in Marcoussis, south of Paris, March 16, 2010. France rugby team trains ahead of their Six Nations rugby union match against England on March 20. REUTERS/Benoit Tessier (FRANCE - Tags: SPORT RUGBY)

France's Dimitri Szarzewski (C) holds Sebastien Chabal (L) as the rugby union national team's players attend a training session at the Rugby Union National Centre in Marcoussis, south of Paris, March 16, 2010. France rugby team trains ahead of their Six Nations rugby union match against England on March 20. REUTERS/Benoit Tessier (FRANCE)

France's Dimitri Szarzewski(R) holds the ball during their 'Captains Run' rugby union training session at Murrayfield stadium in Edinburgh, Scotland February 6, 2010. France play their first Six Nations match against Scotland at Murrayfield stadium on Sunday REUTERS/David Moir (BRITAIN - Tags: SPORT RUGBY)

Players from the competing nations pose with the trophy during the launch of the RBS Six Nations rugby tournament at The Hurlingham Club in London January 27, 2010. The players are (L-R) Chris Cusiter of Scotland, Leonardo Ghiraldini of Italy, Ryan Jones of Wales, Brian O'Driscoll of Ireland, Steve Borthwick of England and Dimitri Szarzewski of France. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT RUGBY)

Players from the competing nations pose with the trophy during the launch of the RBS Six Nations rugby tournament at The Hurlingham Club in London January 27, 2010. The players are (L-R) Chris Cusiter of Scotland, Leonardo Ghiraldini of Italy, Ryan Jones of Wales, Brian O'Driscoll of Ireland, Steve Borthwick of England and Dimitri Szarzewski of France. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT RUGBY)

Players from the competing nations pose with the trophy during the launch of the RBS Six Nations rugby tournament at The Hurlingham Club in London January 27, 2010. The players are (L-R) Chris Cusiter of Scotland, Leonardo Ghiraldini of Italy, Ryan Jones of Wales, Brian O'Driscoll of Ireland, Steve Borthwick of England and Dimitri Szarzewski of France. REUTERS/Eddie Keogh (BRITAIN - Tags: SPORT RUGBY)

New Zealand All Blacks Dan Carter (R) challenges Dimitri Szarzewski of France during their rugby test match at the Velodrome stadium in Marseille, November 28, 2009. REUTERS/Philippe Laurenson (FRANCE SPORT RUGBY)

France's Dimitri Szarzewski (R) avoids the tackle of New Zealand All Blacks Tom Donnelly (L) during their rugby test match at the Velodrome stadium in Marseille November 28, 2009. REUTERS/Jean-Paul Pelissier (FRANCE SPORT RUGBY)

France's Dimitri Szarzewski holds the ball during the first rugby union test match against South Africa in Toulouse, southwestern France, November 13, 2009. REUTERS/Regis Duvignau (FRANCE SPORT RUGBY)

France's Maxime Medard (L) celebrates with his team mate Dimitri Szarzewski after scoring against Italy during their Six Nations rugby union match at the Flaminio Stadium in Rome March 21, 2009. REUTERS/Giampiero Sposito (ITALY)

Australia's Ben Alexander (R) fights for the ball with France's Dimitri Szarzewski (L) during their friendly international rugby union match in Saint-Denis. REUTERS/Pascal Rossignol (FRANCE)

France's Thierry Dusautoir (with ball) tries to break through the Australian defense followed by teammate Dimitri Szarzewski (L) during their friendly international rugby union match in St-Denis November 22, 2008. REUTERS/Charles Platiau (FRANCE)

France's Dimitri Szarzewski (L) is tackled by Italy's Martin Castrogiovanni during their Six Nations rugby match at the Stade de France stadium in Saint Denis, near Paris March 9, 2008. REUTERS/Charles Platiau (FRANCE)

France's Dimitri Szarzewski (L) is tackled by Italy's Martin Castrogiovanni during their Six Nations rugby match at the Stade de France stadium in Saint Denis, near Paris March 9, 2008. REUTERS/Charles Platiau (FRANCE)

France's Dimitri Szarzewski (L) is tackled by England's Jonny Wilkinson during their Six Nations rugby match at the Stade de France stadium in Saint Denis, near Paris, February 23, 2008. REUTERS/Pascal Rossignol (FRANCE)

Scotland's Chris Paterson (R) pursued by France's David Skrela and Dimitri Szarzewski during their Six Nations rugby union match at Murrayfield stadium in Edinburgh, Scotland February 3, 2008. REUTERS/Russell Cheyne (BRITAIN)

Assistant coach Lionel Ntamach (at rear) watches Julien Bonnaire (L) and Dimitri Szarzewski (R) of the French rugby union team train during in Marcoussis, southern Paris January 29, 2008. France will face Scotland in their Six Nations championship rugby union opening match at Murrayfield Stadium in Edinburgh, Scotland February 3, 2008. REUTERS/Charles Platiau (FRANCE)

Dimitri Szarzewski (L) and Cedric Heymans of the French rugby union team walk to a training session in Marcoussis, southern Paris January 29, 2008. France will face Scotland in their Six Nations championship rugby union opening match at Murrayfield Stadium in Edinburgh, Scotland February 3. REUTERS/Charles Platiau (FRANCE)

France's Vincent Clerc (L) evades New Zealand's Byron Kelleher (C) as team-mate Dimitri Szarzewski (R) looks on during the quarter-final Rugby World Cup match against New Zealand in Cardiff October 6, 2007. REUTERS/Charles Platiau (BRITAIN)

France's David Marty (C) runs watched by team-mates Thierry Dusautoir (L) and Dimitri Szarzewski (C rear) during the quarter-final Rugby World Cup match against New Zealand in Cardiff October 6, 2007. REUTERS/Charles Platiau (BRITAIN)

France's rugby team players David Marty (L) and Dimitri Szarzewski practice during the captain's run at the Millennium Stadium in Cardiff, Wales October 5, 2007. France will play their Rugby World Cup quarter-final against New Zealand in Cardiff on October 6, 2007. REUTERS/Bogdan Cristel (BRITAIN)

France's rugby team players Dimitri Szarzewski (L) runs flanked by Pieter de Villiers during a training session in Cardiff, Wales October 4, 2007. France will play their Rugby World Cup quarter-final against New Zealand in Cardiff on October 6, 2007. REUTERS/Charles Platiau (BRITAIN)

France's rugby team coach Bernard Laporte (C) stands in front of Sebastien Chabal (L) and Dimitri Szarzewski (R) during a training session in Cardiff, Wales October 4, 2007. France will play their Rugby World Cup quarter-final against New Zealand in Cardiff on October 6, 2007. REUTERS/Charles Platiau (BRITAIN)

France's rugby team player Sebastien Chabal (L) runs ahead of Nicolas Mas (C) and Dimitri Szarzewski during a training session in Cardiff, Wales October 4, 2007. France will play their Rugby World Cup quarter-final against New Zealand in Cardiff on October 6, 2007. REUTERS/Charles Platiau (BRITAIN)