Arsenal boss Arsene Wenger has told his players to bounce back quickly from Monday night’s home Premier League defeat to Swansea.
The Swans took all three points back to south Wales thanks to a late header from Bafetimbi Gomis against the run of play to leave the Gunners in a real battle for a top-three finish.
Wenger’s men may already be assured of a top-four place but will not want to end up fourth and be forced into a Champions League qualifier.
“It’s frustrating because we lost the game,” said Wenger post-match. “It was a question of maybe finishing better, being patient and not to make a mistake at the back.
“We were a bit unlucky on the goal, but guilty as well. It’s frustrating but we can take a lot of positives from tonight’s game.
“Unfortunately, these kind of games you play 20 times, you win 19 and you lose once, and it was the once tonight.
“The players are disappointed tonight, let’s recover and prepare well and get firing on all cylinders again on Sunday. Yes, it’s an important game.”
United returned to winning ways last time out at Crystal Palace after suffering three defeats in a row in the Premier League.
The Red Devils are 2.38 to beat Arsenal (2.80) at Old Trafford on Sunday, with the draw 3.40.