Solskjaer was furious that Moss ruled Fred's challenge on Alexandre Lacazette was worthy of a spot-kick in the 69th minute.
With just four points separating third from sixth, the race for Champions League qualification is going to be extremely tight but Arsenal are in a strong position as they don't have to play any of their top-six rivals during their final eight league games. Of course, the penalty - I think the referee will be disappointed when he sees this, I don't think it's a penalty.
"I made a mistake against Tottenham, looking down at the last moment, not watching (Spurs keeper Hugo) Lloris, but today I watched until the end, and being focused you score a penalty", the Gabonese striker told Sky Sports.
It means Unai Emery has a great chance to get Arsenal back in the Champions League in his first season at the club and Carragher believes the former Sevilla coach will over-achieve if he manages to secure a top four finish.
AS Granit Xhaka said after scoring the opening goal against Man United yesterday, we are "back in the game" at last.
"We created so many more chances compared to when we beat them in the [FA] Cup". If they win their game in hand (against Brighton) they will be equal on points with us as well!
Solskjaer refused to blame De Gea for Xhaka's opener, instead claiming United's outfield players should have closed the midfielder down more quickly.
"But we were too slow, first 15 minutes, we were too slow to get up to them, we never put them under pressure and he had time to hit that ball".
And Arsenal manager Emery has admitted that he was delighted by the German goalkeeper's performance at The Emirates.
"We knew it was one of the best teams in the league". We played well but they were always unsafe on the counter-attack and today with five at the back we were more compact.
It was United's first league defeat since December 16, Jose Mourinho's last game in charge, and ended Solskjaer's remarkable three-month, 12-match unbeaten league start as his interim replacement.
"Being competitive like today for 90 minutes can give us a stronger mentality".