It looks increasingly likely that Ilkay Gundogan with leave Borussia Dortmund this summer.

The German club have confirmed on Twitter that the 24-year old midfielder has rejected a contract extension on the initial deal that sees him tied to the Westfalenstadion until the summer of 2016.

The Tweet read: "Borussia Dortmund midfielder @Guendogan8 will not cooperate on the 30 June 2016 addition, has decided not to renew his contract valid until that date."

That suggests that Gundogan could be sold this summer so Dortmund avoid losing him for nothing in June next year further attracting the interest of a number of clubs.

Manchester United are believed the be the frontrunners to sign the Germany international while Arsenal, Bayern Munich and Atletico Madrid are also on the scene.

It has been suggested that Gundogan will cost any interested parties around £20million.