The Red Devils registered a 5-0 victory at the BayArena in Group A to progress to the last 16 of the competition.
"I think it was a complete performance," UEFA.com quotes him as saying. "We started very well and we knew they would attack a lot at the beginning.
"They tried to attack and score early, but we did very well and defended very well. The entire team was compact. We then tried to exploit them on the counterattack and had opportunities.
"Then we scored and ended up scoring five. Five goals away from home against a German team – that is not easy!"
United are currently at the top of the group with 11 points from five matches.