Reports have suggested that United have been tracking the Dortmund star for the last year and are considering makng a move for the midfielder.
“If I get a formal offer, I’ll be strongly interested in listening to what they have to say,” Kagawa told Nikkan Sports.
“The Premiership is one of the leagues I want to challenge,
“If it is Man Utd, I’ll be still more eager to go and try how much I can do there.”