MANCHESTER United and Manchester City have until tomorrow to tell the FA what happened following Sunday’s derby, with reports of ugly scenes occurring after the match.

United manager Jose Mourinho and City goalkeeper Ederson are reported to have had a confrontation after City’s 2-1 victory, while it is claimed Mourinho had milk and water thrown at him from the away dressing room.

The home side is understood to have taken exception to City’s post-match celebrations and an altercation — involving up to 20 players and staff in the crowded corridor leading to the dressing rooms — is believed to have left City coach Mikel Arteta with a head wound.