Manchester City manager Manuel Pellegrini could face action from UEFA over his comments following their 2-0 Champions League defeat to Barcelona after the European governing body launched an investigation into his remarks.
Pellegrini strongly criticised Swedish referee Jonas Eriksson and appeared to question his impartiality after a match which turned on the decision to award Barca a penalty and send off City defender Martin Demichelis in the 54th minute.
"UEFA has mandated a disciplinary inspector to commence an investigation concerning the press interviews given by the Manchester City FC head coach Manuel Luis Pellegrini to media after the above-mentioned match," a UEFA statement said.
"Based on the outcome of this investigation, a decision will be taken on whether disciplinary proceedings will be opened."
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.