UEFA have opened disciplinary proceedings against United for ‘late team arrival’ and ‘late kick-off’.
Valencia have also been charged with ‘setting off of fireworks, kit infringement and late kick-off’.
The Red Devils were supposed to get their game underway at 8pm but it was pushed back five minutes because the team bus arrived at Old Trafford just 43 minutes before kick-off.
The two teams then failed to get the match going at the re-scheduled time of 8.05pm, prompting a further charge.
Jose Mourinho blamed the police for not providing an escort to the ground from the Lowry Hotel as heavy traffic in Manchester city centre forced a delay.
“But this time the police refused to do an escort so we came by ourselves,” Mourinho fumed after the match.
“We took from the Lowry Hotel, we took 75 minutes.
“The referee was nice to allow us to start the game five minutes later, because at least we need half an hour to be prepared. But it was not a problem with the club organisation.
“We try everything. We anticipate the fact that maybe it could be dangerous, in the sense of arriving late, but we were informed the police refused an escort.”
Police Chief Inspector Andy Sutcliffe rebuffed Mourinho’s claims.
“All police deployments are carried out following a comprehensive risk assessment process and specifically in respect of escort team busses, are only ever undertaken on occasions when there is intelligence or information to suggest a risk of threat or harm to the players,” he said.
“GMP has previously used police vehicles to accompany a team’s coach but after a review of our core policing responsibilities it was decided that we would no longer provide this service at every fixture.
“We consulted with the relevant football clubs over a period of months to allow them adequate time to plan ahead for their journeys to the stadium.
“Every fixture is assessed individually and we will continue to work with all clubs to provide an appropriate policing response.”