UEFA has begun disciplinary proceedings against Manchester United for the "non-fulfilment of post-match media obligations."
Coach Alex Ferguson was reportedly too distraught over the 2-1 loss to Real Madrid and upset about Nani's red card to attend the postgame press conference.
Manchester United players walked through the mixed zone -- an area where players can choose to talk to the waiting media -- without stopping.
A spokesman for UEFA, whose disciplinary panel will judge the case on March 21, said, "There are no issues for us regarding the sending off."
UEFA has not yet addressed the behavior of Man United players after the final whistle, when they surrounded officials and defender Rio Ferdinand sarcastically applauded referee Cuneyt Cakir.