Barcelona's Argentinian forward Lionel Messi (C) kicks the ball during the UEFA Champions League Group E football match FC Barcelona vs AS Roma at the Camp Nou stadium in Barcelona on November 24, 2015 (AFP)

Roma's Maico, right, concedes a penalty after fouling Barcelona's Luis Suarez during the Group E Champions League soccer match between Barcelona and Roma at the Camp Nou stadium in Barcelona, Spain, Tuesday Nov. 24, 2015. (AP)

Bayern's Javi Martinez, left, challenges for the ball with Olympiakos' Seba during the Champions League group F soccer match between FC Bayern Munich and Olympiakos in Munich, Germany, Tuesday, Nov. 24, 2015. (AP)

Olympiakos' Dimitris Siovas, top, jumps for the ball with Bayern's Javi Martinez during the Champions League group F soccer match between FC Bayern Munich and Olympiakos in Munich, Germany, Tuesday, Nov. 24, 2015. (AP)

Maccabi Tel Aviv's Serbian goalkeeper Predrag Rajkovic (L) saves the ball as Chelsea's French forward Loic Remy (C) attempts a shot on goal and Macabbi November 24, 2015. (AFP)

Maccabi Tel Aviv's Serbian goalkeeper Predrag Rajkovic (L) tries to save a shot on goal by Chelsea's Spanish forward Diego Costa (R) during the UEFA on November 24, 2015. (AFP)

Arsenal's Alexis Sanchez celebrates his team's victory at the end of the Champions League Group F soccer match between Arsenal and Dinamo Zagreb, at The Emirates Stadium in London, Britain, Tuesday, Nov. 24, 2015. (AP)

Zagreb's Alexandru Matel, right, is tackled by Arsenal's Joel Campbell during the Champions League Group F soccer match between Arsenal and Dinamo Zagreb, at The Emirates Stadium in London, Britain, Tuesday, Nov. 24, 2015. (AP)