Barcelona's Lionel Messi (R) is embraced by Manchester City's Yaya Toure after their Champions League last 16 second leg soccer match at Camp Nou stadium in Barcelona March 12, 2014 (Photo: Reuters)
Manchester City's Yaya Toure, centre left is tackled by Barcelona's Gerard Pique during a Champions League, round of 16, second leg, soccer match between FC Barcelona and Manchester City at the Camp Nou Stadium in Barcelona, Spain, Wednesday March 12, 2014 (Photo: AP)
Manchester City players protest as referee Stephane Lannoy shows a red card to Manchester City's Pablo Zabaleta during a Champions League, round of 16, second leg, soccer match between FC Barcelona and Manchester City at the Camp Nou Stadium in Barcelona, Spain, Wednesday March 12, 2014 (Photo: AP)
Manchester City's assistant coach Ruben Cousillas watches from the side line during a Champions League, round of 16, second leg, soccer match between FC Barcelona and Manchester City at the Camp Nou Stadium in Barcelona, Spain, Wednesday March 12, 2014 (Photo: AP)
Barcelona 4-1 Manchester City
Paris St Germain's Ezequiel Lavezzi (R) scores against Bayer Leverkusen during their Champions League round of 16 second leg soccer match at the Parc des Princes Stadium in Paris, March 12, 2014 (Photo: Reuters)
PSG's Lucas shoots a free kick during the Champions League last 16 second leg soccer match between Paris Saint Germain and Bayer Leverkusen at Parc des Princes stadium in Paris, Wednesday, March 12, 2014 (Photo: AP)
Paris St Germain's Ezequiel Lavezzi celebrates after scoring against Bayer Leverkusen during their Champions League round of 16 second leg soccer match at the Parc des Princes Stadium in Paris, March 12, 2014 (Photo: Reuters)
PSG's Ezequiel Lavezzi, left, celebrates his side's second goal with teammates during a Champions League last 16 second leg soccer match between Paris Saint Germain against Bayer Leverkusen at Parc des Princes stadium in Paris, Wednesday, March 12, 2014 (Photo: AP)
Bayer Leverkusen's Emre Can (R) gets a red card from referee Ivan Bebek during their Champions League round of 16 second leg soccer match against Paris St Germain at the Parc des Princes Stadium in Paris, March 12, 2014 (Photo: Reuters)
Barcelona's Lionel Messi celebrates after scoring a goal against Manchester City during their Champions League last 16 second leg soccer match at Camp Nou stadium in Barcelona March 12, 2014 (Photo: Reuters)
Barcelona's Lionel Messi, 3rd left tries to get through the Manchester City defence during a Champions League, round of 16, second leg, soccer match between FC Barcelona and Manchester City at the Camp Nou Stadium in Barcelona, Spain, Wednesday March 12, 2014 (Photo: AP)
Barcelona fans wave flags during a Champions League, round of 16, second leg, soccer match between FC Barcelona and Manchester City at the Camp Nou Stadium in Barcelona, Spain, Wednesday March 12, 2014 (Photo: AP)
Barcelona's goalkeeper Victor Valdes (C) saves a shoot from Manchester City's Samir Nasri during their Champions League last 16 second leg soccer match at Camp Nou stadium in Barcelona March 12, 2014 (Photo: Reuters)
FC Barcelona's Neymar, left steers the ball away from Manchester City's James Milner during a Champions League, round of 16, second leg, soccer match between FC Barcelona and Manchester City at the Camp Nou Stadium in Barcelona, Spain, Wednesday March 12, 2014 (Photo: AP)
Leverkusen's Sidney Sam, right, celebrates his opening goal with Leverkusen's Giulio Donati during the Champions League round of 16 second leg soccer match between Paris Saint Germain and Bayer Leverkusen at the Parc des Princes stadium in Paris, Wednesday, March 12, 2014 (Photo: AP)
Leverkusen's Simon Rolfes, right, vies for the ball with PSG's Adrien Rabiot during the Champions League last 16 second leg soccer match between Paris Saint Germain against Bayer Leverkusen at Parc des Princes stadium in Paris, Wednesday, March 12, 2014 (Photo: AP)
PSG player Marquinhos, right, Christophe Jallet and Lucas celebrate their win after the Champions League round of 16 second leg soccer match between Paris Saint Germain and Bayer Leverkusen at the Parc des Princes stadium in Paris, Wednesday, March 12, 2014 (Photo: AP)