The United manager was incensed when Marco Ianni, an assistant coach to Chelsea's Maurizio Sarri, celebrated by running on to the pitch and then clenched his fists in celebration close to Mourinho's face, before heading down the tunnel.
Chelsea's fans goaded Mourinho following the touchline drama, prompting the United boss to hold three fingers up to home supporters after the final whistle, in reference to the number of Premier League titles he won at Stamford Bridge.
"And after that Sarri's assistant came to me and apologised to me". I told him to forget it.
"Not celebrations, bad education", the Portuguese said. I don't think so.
But Cardiff responded with two in five minutes, in-form Josh Murphy curling past Marcus Bettinelli and Bobby Reid slotting home his first goal for Cardiff, but Fulham were level just after the half-hour when Ryan Sessegnon struck.
Manchester City went back to the top of the Premier League table after brushing Burnley aside in a 5-0 win at the Etihad Stadium. I spoke with my staff, and then [Ianni] agreed to speak to Mourinho and say sorry.
United, meanwhile, missed the chance to secure their first victory at Stamford Bridge in all competitions since Sir Alex Ferguson retired at the end of the 2012-13 season.
"Maurizio saw and Maurizio said he would take care of it internally and [for Mourinho] to accept his apologies which I did. So I think we deserve much more than this result but this is what it is". "We were in the wrong". The 2-2 [equaliser] in last minutes is okay for confidence of my players, but I have to look at something else. Martial was excellent in the second half and Mourinho refused to criticise Paul Pogba for losing Rüdiger when the Chelsea defender headed in the opening goal from a corner. "We always tried to play, there was no time-wasting".