The England worldwide had previously scored twice in the league clash in north London last season and irked Arsenal fans by posting his recent celebration on Instagram with the location set as "dancefloor".
Goals from Granit Xhaka and Pierre-Emerick Aubameyang secured a 2-0 win for the home team while Leno was on hand to hang on to the clean sheet and help his team win a crucial three points and move into the top 4 spots.
Arsenal playmaker Mesut Ozil responded after Sunday's 2-0 win with a tweet that read "Dancefloor huh!?" and Leno has said that players "never forget" the sight of an opponent celebrating in that fashion.
"The performance was good but the result was disappointing".
Going into the fixture at Emirates Stadium, United were in fourth place having been 11 points adrift of the position when Mourinho was dismissed on 18 December.
Lingard missed the Arsenal vs Manchester United clash due to a hamstring injury.
"Now we have two points and that was enough motivation for us.
One of those days you have to dust yourself down, have a good reaction - we have Wolves in the [FA Cup] quarter-final and it's a good game to look forward to".
"We have won games we have not deserved to win and today we lost a game we did not deserve to lose".
"The plan was to stay compact, close to each other, and wait for the mistake of Chelsea, then when we've got the ball, try to keep it and do something", he added.
The former Liverpool defender claims Arsenal's squad is the worst out of the top six clubs so he feels Emery is doing a fantastic job to be competing with superior teams such as Tottenham and Manchester United this season.
At the moment, I think we are playing confidently in each match and today we showed everybody that.
"Yes, of course", he told manutd.com when asked if the race for a top-four finish could go down to the last day of the campaign. Of course, the penalty - I think the referee will be disappointed when he sees this, I don't think it's a penalty.
Jaguar that attacked selfie-taking woman won't be put down
Officials said the attack is under investigation but noted that the animal was not outside her enclosure at any time. She called the whole incident a "crazy accident" and expressed regret at video of the incident hitting the internet.