Lionel Messi (R) of Barcelona celebrates scoring with teamates Xavi (L) and Iniesta during the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Pique (L) of Barcelona vies the ball with Robinho of AC Milan during the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Busquets (L) of Barcelona vies the ball with Kaka of AC Milan during the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Lionel Messi scores during the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Lionel Messi (Front) of Barcelona shoots the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Iniesta (C) of Barcelona vies the ball with Cristian Zapata (L) and Ignazio Abate of AC Milan during the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Lionel Messi (C) of Barcelona vies the ball with Nigel de Jong (L) of AC Milan during the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Lionel Messi (L) of Barcelona vies the ball with Cristian Zapata of AC Milan during the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Players of Barcelona line up before the the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)

Robinho (2nd R) of AC Milan celebrates scoring during the UEFA Champions League Group H match between AC Milan and Barcelona at San Siro Stadium in Milan, Italy on Oct. 22, 2013. The match ended with a 1-1 draw. (Xinhua/Alberto Lingria)