Thousands of Barcelona fans are in Manchester ahead of the Champions League clash with Manchester City at the Etihad stadium.
FIFA's referees chief has come to the defence of Swedish official after he was accused by Manuel Pellegrini of favouring Barcelona.
Pellegrini accepts his side face a tough task against Catalans in their Champions League last-16 tie, but he is far from intimidated.
Manchester City host Barcelona in the first leg of their Champions League last-16 tie. Here is a look at some of the likely key battles.