Jose Mounriho could face a touchline ban if he is slapped with another FA charge after his bust up at stamford bridge.
The former chelsea boss reacted after Marco Ianni (assistant coach at chelsea) taunted him in front of his team’s bench when Ross Barkley scored a 96th minute equaliser.
Mourinho had to be held back by stewards and staff when he went for Ianni, and the brawl continued into the tunnel in a chaotic end to the game.
The incident was included in referee Mike Dean’s report of the game, which means that both Mourinho and Ianni could face charges.
The United manager is already facing an FA hearing on Wednesday after uttering a string of Portuguese swear words at a television camera following his team’s win over Newcastle two weeks ago.
Antonio Rudiger’s early goal gave Chelsea the lead before two strikes from Anthony Martial put United ahead, they looked set for a win until Barkley struck in the sixth minute of injury time.
That prompted Ianni, who was sitting in the second row on the bench, to leap up and race into the United technical area before twice taunting Mourinho to his face with fists clenched.