The Portuguese saw his Manchester United side beaten 2-1 by rival Manchester City in Monday's Premier League clash, which was marred by a post-match fracas in the tunnel at Old Trafford.

The FA has already asked both clubs for their observations regarding that incident, which reportedly saw Mourinho splashed with milk.

However, Mourinho may also find himself in hot water for comments he made prior to the match, when he appeared to accuse City of gamesmanship, saying: "A little bit of wind and they fall."

An FA statement read: "The FA has requested observations from Jose Mourinho for pre-match media comments he made on Friday 8 December, prior to last Sunday’s match against Manchester City.

"He has until 6pm on Monday 18 December to respond."