Arsenal are unlikely to finish in a Champions League spot this season, but Pogba has insisted that Sunday will still be a tough game.
"What [coming back again] says is that mentally we are strong, and it showed that we can be a strong team altogether," Pogba told MUTV.
"We have shown it during the season against the big teams, most of the time, but we need to keep it up against other teams as well. We need to keep playing altogether with the same mentality. It's a big one. We need points. They have a big game against Atletico so maybe that might help us if they are a bit tired. We know it's going to be a hard game, it was a very hard game against them earlier in the season.
"But we had a very good team performance. We need that again and we need everybody to be at their best because when that happens it moves the team up. We've been great in the last game with the team performance and against the top teams you always have to produce that."
United won 3-1 against their upcoming opponents at the Emirates Stadium in December, with Pogba picking up two assists and a red card.