Manchester United are interested in Borussia Dortmund attacker Shinji Kagawa.
United had scouts check on the Japan international in the final round of the Bundesliga season and are aware he is valued at £20 million.
Kagawa told Nikkan Sports, he would be open to an approach from the Premier League champions, saying: "If I get a formal offer, I'll be strongly interested in listening to what they have to say.
"The Premiership is one of the leagues I want to challenge. If it is (United), I'll be still more eager to go and try and see how much I can do there."
