Soccer Football - Europa League - Playoffs - Panathinaikos vs Athletic Bilbao - Athens, Greece - August 17, 2017 Panathinaikos' coach Nikos Liberopoulos REUTERS/Alkis Konstantinidis 

Greece's Giorgos Samaras, Giannis Fetfatzidis, Nikos Liberopoulos, Fanis Gekas and Stelios Malezas (L-R) attend a training session during the Euro 2012 at City stadium in Wroclaw June 11, 2012. REUTERS/Dominic Ebenbichler (POLAND - Tags: SPORT SOCCER)

Greece's Nikos Liberopoulos (L) challenges Poland's Robert Lewandowski during their Group A Euro 2012 soccer match at the National stadium in Warsaw June 8, 2012. REUTERS/Leonhard Foeger (POLAND - Tags: SPORT SOCCER)

Panathiaikos' Josu Sarriegi (R) challenges AEK Athens' Nikos Liberopoulos during their Greek Super league soccer match in Athens November 6, 2011. REUTERS/Icon/Costas Baltas (GREECE - Tags: SPORT SOCCER) 

Nikos Liberopoulos of AEK Athens reacts during a Europa League Group H soccer match against Anderlecht at the Constant Vanden Stock stadium in Brussels September 15, 2011. REUTERS/Thierry Roge (BELGIUM - Tags: SPORT SOCCER)

Senad Lulic (L) of Bosnia and Herzegovina attempts an overhead kick against Nikos Liberopoulos of Greece during their international friendly soccer match in Sarajevo August 10, 2011. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: SPORT SOCCER) 

Greece's Nikos Liberopoulos (L) challenges Poland's Rafal Murawski during their international friendly soccer match at Karaiskaki stadium in Piraeus, near Athens March 29, 2011. REUTERS/Yiorgos Karahalis (GREECE - Tags: SPORT SOCCER) 

Nikos Liberopoulo (R) of Greece tries to shoot past Malta's Roderick Briffa during their Euro 2012 Group F qualifier soccer match at Ta' Qali National Stadium outside Valletta March 26, 2011. REUTERS/Darrin Zammit Lupi (MALTASPORT - Tags: SPORT SOCCER) 

Malta's Gareth Sciberras (4) tries to block Nikos Liberopoulo of Greece during their Euro 2012 Group F qualifier soccer match at Ta' Qali National Stadium outside Valletta March 26, 2011. REUTERS/Darrin Zammit Lupi (MALTA - Tags: SPORT SOCCER) 

Hajduk Split goalkeeper Bozidar Radosevic reacts after failing to save a penalty shot by AEK Athens Nikos Liberopoulos (R) during their Europa League group G soccer match at the Poljud stadium in Croatia's Adriatic port of Split December 1, 2010. REUTERS/Nikola Solic (CROATIA - Tags: SPORT SOCCER) 

Nikos Liberopoulos (R) of AEK challenges Mario Maloca (L) of Hajduk during their Europa League group G soccer match at the Poljud stadium in Croatia's Adriatic port of Split December 1, 2010. REUTERS/Nikola Solic (CROATIA - Tags: SPORT SOCCER) 

Marco Russ (L), Habib Bellaid (C) and Nikos Liberopoulos of Eintracht Frankfurt celebrate a goal during their friendly soccer match against Real Madrid in Frankfurt August 12, 2008. REUTERS/Alex Grimm (GERMANY) 

Russia's Sergei Semak is challenged by Greece's Nikos Liberopoulos (23) during their Group D Euro 2008 soccer match at the Wals-Siezenheim stadium in Salzburg, June 14, 2008. REUTERS/Alexander Demianchuk (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Greece's soccer team pose together on the pitch before their Group D Euro 2008 soccer match against Russia at the Wals-Siezenheim Stadium in Salzburg, June 14, 2008. Back row from L-R: Traianos Dellas, Angelos Haristeas, Christos Patsatzoglou, Sotiris Kyrgiakos, Antonis Nikopolidis, Nikos Liberopoulos. Front row, from L-R: Giourkas Seitaridis, Angelos Basinas, Yannis Amanatidis, Vassilis Torosidis, Costas Katsouranis. REUTERS/Heinz-Peter Bader (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Greece's Nikos Liberopoulos is challenged by Russia's Sergei Ignashevich (R) during their Group D Euro 2008 soccer match at the Wals-Siezenheim stadium in Salzburg, June 14, 2008. REUTERS/Christian Charisius (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Russia's Alexander Anyukov and Greece's Nikos Liberopoulos chase the ball during their Group D Euro 2008 soccer match at the Wals-Siezenheim stadium in Salzburg, June 14, 2008. REUTERS/Dominic Ebenbichler (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Greece's Nikos Liberopoulos, Angelos Basinas and Angelos Haristeas (from R to L) react after the goal of Russia's Konstantin Zyryanov (not pictured) during their Group D Euro 2008 soccer match at the Wals-Siezenheim stadium in Salzburg, June 14, 2008. REUTERS/Alexander Demianchuk (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Russia's Denis Kolodin (R) is challenged by Greece's Nikos Liberopoulos during their Group D Euro 2008 soccer match at the Wals-Siezenheim stadium in Salzburg, June 14, 2008. REUTERS/Alexander Demianchuk (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Russia Sergei Semak (L) clears the ball away from Greece's Nikos Liberopoulos during their Group D Euro 2008 soccer match at the Wals-Siezenheim Stadium in Salzburg, June 14, 2008. REUTERS/ (AUSTRIA) REUTERS/Alexander Demianchuk (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Russia Sergei Semak (L) clears the ball away from Greece's Nikos Liberopoulos (C) as Russian team mate Yuri Zhirkov reacts during their Group D Euro 2008 soccer match at the Wals-Siezenheim Stadium in Salzburg, June 14, 2008. REUTERS/ (AUSTRIA) REUTERS/Alexander Demianchuk (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Greece's Nikos Liberopoulos watches as Russia's Denis Kolodin (L) heads the ball during their Group D Euro 2008 soccer match at the Wals-Siezenheim stadium in Salzburg, June 14, 2008. REUTERS/Dominic Ebenbichler (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Russia's Sergei Semak kicks the ball in front of Greece's Nikos Liberopoulos (L) during their Group D Euro 2008 soccer match at the Wals-Siezenheim stadium in Salzburg, June 14, 2008. REUTERS/Christian Charisius (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

Greece's Nikos Liberopoulos jumps up for the header over Russia's Sergei Ignashevich (R) during their Group D Euro 2008 soccer match at the Wals-Siezenheim stadium in Salzburg, June 14, 2008. REUTERS/Christian Charisius (AUSTRIA) MOBILE OUT. EDITORIAL USE ONLY 

AEK Athens' Nikos Liberopoulos (L) reacts to a missed scoring chance in front of Villarreal goalkeeper Lopez Diego during their UEFA Cup Group C soccer match in Athens December 20, 2007. REUTERS/Yiorgos Karahalis (GREECE) 

AEK Athens' Nikos Liberopoulos (R) challenges Villareal's Fabricio Fuentes during their UEFA Cup Group C soccer match in Athens December 20, 2007. REUTERS/Yiorgos Karahalis (GREECE) 

Greece's Nikos Liberopoulos looks on before a Euro 2008 Group C qualifying soccer match in Athens November 17, 2007. REUTERS/Yiorgos Karahalis (GREECE) EURO 2008 PREVIEW 

AEK Athens' Nikos Liberopoulos (C) and SV Salzburg's Niko Kovac (R) look as SV Salzburg's Karel Pitak (L) heads the ball during their UEFA Cup first round, first leg soccer match in Athens September 20, 2007. REUTERS/Yiorgos Karahalis (GREECE) 

AEK Athens' Nikos Liberopoulos and Akis Zikos (R) look down at the end of their Champions League Group H soccer match against Anderlecht at the Constant Vanden Stock stadium in Brussels December 6, 2006. REUTERS/Francois Lenoir (BELGIUM) 

AEK Athens' Nikos Liberopoulos (R) fights for the ball with AC Milan's Andrea Pirlo during their Champions League Group H soccer match at Olympic stadium in Athens November 21, 2006. REUTERS/John Kolesidis (GREECE) 

AEK Athens' Nikos Liberopoulos (L) fight for the ball against Milan's Yoann Gourcuff during their Champions League Group H soccer match at Olympic stadium in Athens November 21, 2006. REUTERS/John Kolesidis (GREECE) 

AEK Athens' Nikos Liberopoulos (L) fights for the ball against Lille's Gregory Tafforeau during their Champions League Group H soccer match at Olympic stadium in Athens November 1, 2006. REUTERS/John Kolesidis (GREECE) 

AEK Athens' Nikos Liberopoulos reacts after scoring against Lille during their Champions League Group H soccer match in Athens November 1, 2006. REUTERS/Yiorgos Karahalis (GREECE) 

AEK Athens' Nikos Liberopoulos reacts after scoring against Lille during their Champions League Group H soccer match in Athens November 1, 2006. REUTERS/Yiorgos Karahalis (GREECE) 

LOSC Lille's Nicolas Plestan (Rear) challenges AEK Athens Nikos Liberopoulos during their Champions League Group H soccer match at Felix Bollaert stadium in Lens, October 17, 2006 REUTERS/Pascal Rossignol (FRANCE) 

Greece's Nikos Liberopoulos (C) fights for the ball with Norway's Kristofer Haestad (L) as Martin Andresen watches during their Euro 2008 Group C qualifying soccer match in Athens October 7, 2006. REUTERS/Yiorgos Karahalis 

Tomas Janu of Slovan Liberec (R) challenges Nikos Liberopoulos of
Panathinaikos Athens (L) during their third round first leg UEFA Cup
match in Liberec November 28, 2002. The match ended in a 2-2 draw.
REUTERS/Petr Josek

PJ/GB 

Sparta Prague Jiri Jarosik (L) challenges Panathinaikos' Nikos
Liberopoulos during second half action of their Champions League Group
C soccer match in Athens' Apostolos Nikolaides stadium February 27,
2002. Panathinaikos beat Sparta Prague 2-1. REUTERS/Yiorgos Karahalis

Yk/WS 

Panathinaikos' Nikos Libaropoulos (front) takes control of the ball
from three Sparta Prague defenders during first half action of a
Champions League Group C soccer match in Athens' Apostolos Nikolaides
stadium February 27, 2002. REUTERS/Yiorgos Karahalis

YB 

Panathinaikos' Nikos Liberopoulos (L) struggles for the control of the ball against Manchester United's David Beckham during their Champions league group A soccer match in Athens' Olympic Stadium March 8, 2001.

YK/AA 

Nikos Liberopoulos (C) of Greece is challenged by Yugoslavia's Predrag Djordjevic (L) and Sasa Ivic during a friendly soccer match in the northern Greek town of Xanthi December 13, 2000. The match ended in a draw 1-1.

YK 

Panathinaikos forward Nikos Liberopoulos (C) drives the ball past Valencia's Ruben Baraja (R) and Italian Amadeo Carboni during the UEFA Champions League Group A soccer match in Athens' Olympic stadium December 6, 2000.

YK 

Aaron Mokoena (R) of Ajax heads the ball past Nikos Liberopoulos of Panathinaikos during action in the second half of their consolation match at the Gotham Cup, July 25 in Giants Stadium. Panathinaikos won the game 3-2.

JC/BM/KM 

Andrij Husin of Ukraine's Dynamo Kiev (R) jumps for the ball with Nikos Liberopoulos of the Greek Panathinaikos during their Champions League group E match in Kiev November 25.

YK/ME 

Panathinaikos Athens striker Nikos Liberopoulos (L) protects the ball in front of Steaua Bucharest defender Adrian Matei (R) during their first leg second preliminary round Champions League match in Bucharest August 12.

BC/SB