The Bavarian giants come into the game at Old Trafford having already sealed the Bundesliga title, while United are at risk of missing out on European football altogether next season.
He told The Mirror: "Playing United is the sort of thing that really gets the best out of me.
"We won the German league last week. But we were not even bothered about that. Nobody in the dressing room was talking about it. We knew ages ago we would win the title.
"Beating every team in the Champions League is our big thing. The Champions League is what we want again, especially after winning it at Wembley last year. Bayern have no fear of United at all."
Bayern lost their perfect home record in the Bundesliga on Saturday after drawing 3-3 with Hoffenheim.