Borussia Dortmund will not allow Henrikh Mkhitaryan to leave on a transfer despite a reported €24 million offer from Manchester United.

Mkhitaryan is also receiving interest from Arsenal.

Mkhitaryan's contract with Dortmund expires in 2017.

Dortmund has offered Mkhitaryan an extension but it has been turned down.

"We've been negotiating a new deal with Henrikh Mkhitaryan for four months," Dortmund CEO Hans-Joachim Watzke confirmed in Bild. "We now know he won't sign an extension. There was never a promise that he can leave us prematurely."