Gotze's agent, Dirk Hebel, claims Juventus and Manchester United are among the clubs who've been in contact so far:
I think in Europe all the top clubs are interested in Mario. ... I can confirm that I have had contact with Juventus and Manchester United, but not only them.
I don't know if he'll go away after this season - you should ask Borussia - but I think that they will not let him leave for less than €40 million. He still is very happy at Dortmund, though now he is injured.
Talksport says Juve are willing to offer Milos Krasic to Dortmund in part-exchange for Gotze and has the Italians in pole position to claim his signature this summer.
We're in contact and we're interested. That's good news!
40M bad news!