Cristiano Ronaldo scored his first Champions League goal for Juventus but a stunning Manchester United comeback snatched a 2-1 win for the Premier League side to delay the Italians´ passage to the last 16 on Wednesday.
Manchester United will now switch their focus back to Premier League affairs and their crunch clash at Manchester City on Sunday.
"I probably shouldn't have done it, and with a cool head I wouldn't have done it, but with my family insulted, including my Inter family, I reacted like this", Mourinho said.
"I didn't offend anyone at the end, I just made a gesture that I wanted to hear them louder".
Juan Mata, on the other hand, is expected to start over Jesse Lingard this weekend following a promising display off the bench against Juventus in midweek.
United have endured criticism this season, but have come through their sticky period, with Sunday's showdown ready to provide the ultimate test of where they are as a team, and whether they can get back into the title mix. "We should have won the game easily, by three or four goals".
Juan Mata's superb free-kick four minutes from time sent the visitors wild, but the best was yet to come as an Ashley Young free-kick was unwittingly bundled in at the back post by Juventus' Alex Sandro to give United a last-gasp win.More news: Young Windies squad for three T20IS against India
Mourinho, who spent two years in charge of Inter Milan, cupped his ear at the final whistle provoking a confrontation on the pitch with Leonardo Bonucci and Paulo Dybala. But I respect Juventus and the quality they have.
Paul Pogba loved his winning return to former club Juventus and believes Manchester United will continue to flourish in the role of "outsider".
"He (Massimiliano Allegri) left Matuidi out tonight as well, he left Cancelo out".
Now we know that Ronaldo actually apologized after celebrating his goal against Manchester United, but it remains to be seen if the Red Devils fans will keep supporting their legend like they have done all these years.
'I'm not going to talk about this because I will be on the front page!' he said. What a hard place to go, this stadium, they've made it a fortress over the last couple of years.
Ronaldo faced United for the fourth time in the Champions League since departing Old Trafford and was on hand to open the scoring for Juventus in the 65th minute.
The Portuguese superstar immediately ran to the corner flag, lifted up his shirt and pointed at his impressive stomach muscles.
Juve were too good for United at Old Trafford a fortnight ago and, until Wednesday night, had not been beaten all season or conceded a single goal in the Champions League.