Ribery, who, along with Arjen Robben, is "carrying the banner" for Bayern in the opinion of Sir Alex Ferguson, said in The Sun: "Rooney is carrying the United team this season. We must pay great attention to him.
"He's having a tremendous season and I am happy for him. He's a player I like a lot.
"He's hungry. He gives everything for his team. He will tackle, he defends, he attacks, he scores goals. He's full of confidence."
Ribery added: "The whole world sees us losing but I think we have a great chance. We have a team good enough to believe in."