"If they look back at it, how can they not see it is not right what he is done?" "Yes", Wright said on BBC Radio 5 live.
"In the last minute, he (Lukaku) was fighting and running back like he was in the first minute, so I think it is also a mentality question", Mourinho told reporters.
Everton confirm Sam Allardyce as new manager
Allardyce is an ambassador for bookmakers Paddy Power , who have worked closely with the ex-England manager throughout this season.
As a result, a panel of three former elite referees reviewed the footage independently of one another to advise whether they deemed it a sending off offence.
If the FA made a decision to charge the Belgian striker, he would have been banned for three games; United's trip to Watford on Tuesday, their visit to Arsenal on Saturday and the Derby against Manchester City eight days later.
Mourinho's side, now second in the league, remain eight points behind leaders Manchester City, who are unbeaten with 37 points after 13 matches. He has had two digs at him.