Bayern Munich manager Pep Guardiola has criticised the decision which saw Bastian Schweinsteiger receive a late red card which rules him out of the Champions League quarter-final second leg against Manchester United.
Schweinsteiger, who cancelled out Nemanja Vidic's opener to give Bayern a crucial away goal, was shown a second yellow card by referee Carlos Carbello in stoppage time after a late challenge on Wayne Rooney.
Replays suggest the United striker exaggerated the contact made by the German international and Guardiola has protested his player's innocence.
"I spoke with the referee and I gave him my opinion," he said. "I listened to his opinion. He is a very good referee. He had a very good game but it is unfair."
The 29 year old will now miss the second leg, while defender Javi Martinez will also be absent after picking up a yellow card which sees him suspended for the second leg.
Midfielder Thiago Alcantara is also out through injury leaving Bayern weakened for the visit of United, who will be looking to replicate Arsenal and Manchester City's victories at the Allianz Arena in 2013.