Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 General view as Chelsea's Tammy Abraham scores their second goal REUTERS/David Klein

People walk during snowfall in Wandsworth Common, in London Britain, January 24, 2021. REUTERS/Henry Nicholls

Karen Degen exercises in a fitness centre, which was reopened after setting up huge tents allowing clients to exercise amid the coronavirus disease (COVID-19) outbreak in Hamburg, Germany, January 23, 2021. Picture taken January 23, 2021. REUTERS/Fabian Bimmer

People wearing face masks walk during snowfall in Wandsworth Common, in London Britain, January 24, 2021. REUTERS/Henry Nicholls

Nils Kuprat stands in front of his fitness centre, which was reopened after setting up huge tents allowing clients to exercise amid the coronavirus disease (COVID-19) outbreak in Hamburg, Germany, January 23, 2021. Picture taken January 23, 2021. REUTERS/Fabian Bimmer

Karen Degen exercises in a fitness centre, which was reopened after setting up huge tents allowing clients to exercise amid the coronavirus disease (COVID-19) outbreak in Hamburg, Germany, January 23, 2021. Picture taken January 23, 2021. REUTERS/Fabian Bimmer

A person pulls a child on a sledge through the snow in Wandsworth Common, in London Britain, January 24, 2021. REUTERS/Henry Nicholls

Karen Degen exercises in a fitness centre, which was reopened after setting up huge tents allowing clients to exercise amid the coronavirus disease (COVID-19) outbreak in Hamburg, Germany, January 23, 2021. Picture taken January 23, 2021. REUTERS/Fabian Bimmer

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Luton Town manager Nathan Jones reacts Action Images via Reuters/John Sibley

A police officer speaks to a woman during a protest against restrictions put in place to curb the spread of the coronavirus disease (COVID-19), in Amsterdam, Netherlands January 24, 2021. REUTERS/Eva Plevier

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Mason Mount in action with Luton Town's Ryan Tunnicliffe REUTERS/David Klein

A snowman is seen in front of Buckingham Palace after snowfall in London, Britain, January 24, 2021. REUTERS/Hannah McKay

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Timo Werner in action with Luton Town's Harry Cornick REUTERS/David Klein

Soccer Football - Serie A - Juventus v Bologna - Allianz Stadium, Turin, Italy - January 24, 2021 Juventus' Giorgio Chiellini in action with Bologna's Musa Barrow REUTERS/Massimo Pinca

Police officers detain a man during a protest against restrictions put in place to curb the spread of the coronavirus disease (COVID-19), in Amsterdam, Netherlands January 24, 2021. REUTERS/Eva Plevier

Police officers detain a man during a protest against restrictions put in place to curb the spread of the coronavirus disease (COVID-19), in Amsterdam, Netherlands January 24, 2021. REUTERS/Eva Plevier

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Mason Mount reacts REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Mason Mount reacts REUTERS/David Klein

A police officer detains a man during a protest against restrictions put in place to curb the spread of the coronavirus disease (COVID-19), in Amsterdam, Netherlands January 24, 2021. REUTERS/Eva Plevier

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Mason Mount in action with Luton Town's Kieran Dewsbury-Hall REUTERS/David Klein

Soccer Football - Serie A - Juventus v Bologna - Allianz Stadium, Turin, Italy - January 24, 2021 Juventus' Cristiano Ronaldo in action REUTERS/Massimo Pinca

Mourners carry the coffin of a fighter from Shi'ite Popular Mobilization Forces (PMF), who was killed in clashes with Islamic State militants in east of Tikrit, during a funeral at a cemetry in Najaf, Iraq January 24, 2021. REUTERS/Alaa al-Marjani

Soccer Football - Serie A - Juventus v Bologna - Allianz Stadium, Turin, Italy - January 24, 2021 Juventus' Cristiano Ronaldo REUTERS/Massimo Pinca

Mourners carry the coffin of a fighter from Shi'ite Popular Mobilization Forces (PMF), who was killed in clashes with Islamic State militants in east of Tikrit, during a funeral in Najaf, Iraq January 24, 2021. REUTERS/Alaa al-Marjani

Soccer Football - Serie A - Juventus v Bologna - Allianz Stadium, Turin, Italy - January 24, 2021 Juventus coach Andrea Pirlo REUTERS/Massimo Pinca

Soldiers walk at Buckingham Palace during snowfall in London, Britain, January 24, 2021. REUTERS/Hannah McKay

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Reece James in action with Luton Town's Harry Cornick REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Timo Werner in action with Luton Town's Tom Lockyer REUTERS/David Klein

Mourners carry the coffin of a fighter from Shi'ite Popular Mobilization Forces (PMF), who was killed in clashes with Islamic State militants in east of Tikrit, during a funeral in Najaf, Iraq January 24, 2021. REUTERS/Alaa al-Marjani

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga, Reece James and Andreas Christensen look dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga looks dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga and Andreas Christensen look dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga and Andreas Christensen look dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga looks dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

A mourner reacts next to the coffin of a fighter from Shi'ite Popular Mobilization Forces (PMF), who was killed in clashes with Islamic State militants in east of Tikrit during a funeral in Najaf, Iraq January 24, 2021. REUTERS/Alaa al-Marjani

People have a snow fight in front of Buckingham Palace during snowfall in London, Britain, January 24, 2021. REUTERS/Hannah McKay

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Timo Werner in action with Luton Town's Tom Lockyer REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga and Andreas Christensen look dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga and Andreas Christensen look dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga as Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga as Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga looks dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga looks dejected after Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kepa Arrizabalaga as Jordan Clark scored Luton Town's first goal REUTERS/David Klein

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Luton Town's Jordan Clark scores their first goal Action Images via Reuters/John Sibley

A soldiers walks at Buckingham Palace during snowfall in London, Britain, January 24, 2021. REUTERS/Hannah McKay

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Kurt Zouma reacts after sustaining an injury REUTERS/David Klein

Soldiers walk at Buckingham Palace during snowfall in London, Britain, January 24, 2021. REUTERS/Hannah McKay

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea manager Frank Lampard with Reece James and teammates REUTERS/David Klein

A social distancing sign is pictured during snowfall in London Britain, January 24, 2021. REUTERS/Toby Melville

Policemen detain an Ultra-Orthodox Jew during a protest over the coronavirus disease (COVID-19) restrictions in Ashdod, Israel, January 24, 2021. REUTERS/Amir Cohen

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Luton Town's Pelly-Ruddock Mpanzu remonstrates with referee David Coote after Chelsea's first goal scored by Tammy Abraham REUTERS/David Klein

An Ultra-Orthodox Jew adjusts his hat as he is pushed back by policemen during a protest over the coronavirus disease (COVID-19) restrictions in Ashdod, Israel, January 24, 2021. REUTERS/Amir Cohen

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Luton Town's Ryan Tunnicliffe in action with Chelsea's Hakim Ziyech Action Images via Reuters/John Sibley

People walk through Green Park during snowfall in London, Britain, January 24, 2021. REUTERS/Hannah McKay

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Tammy Abraham celebrates scoring their second goal with teammates REUTERS/David Klein

A double-decker bus is seen during snowfall in London, Britain, January 24, 2021. REUTERS/Hannah McKay

Soccer Football - Serie A - Juventus v Bologna - Allianz Stadium, Turin, Italy - January 24, 2021 Juventus' Weston McKennie misses a chance to score REUTERS/Massimo Pinca

Soccer Football - FA Cup - Fourth Round - Chelsea v Luton Town - Stamford Bridge, London, Britain - January 24, 2021 Chelsea's Tammy Abraham celebrates scoring their second goal with Emerson and Reece James REUTERS/David Klein

Soccer Football - Serie A - Juventus v Bologna - Allianz Stadium, Turin, Italy - January 24, 2021 Juventus' Weston McKennie reacts after missing a chance to score REUTERS/Massimo Pinca