Germany international Mario Gotze has informed Borussia Dortmund that he wishes to leave the Westfalenstadion and join Bayern Munich in July.
A statement on Dortmund's Facebook page confirmed the news, although the club stressed they had yet to hear anything official from the newly-crowned Bundesliga champions.
The statement read: "Mario Gotze's agent Volker Struth told us a few days ago that the player wishes to make use of his release clause and on July 1, 2013 move to Bayern Munich."
Dortmund chief executive Hans-Joachim Watzke said: "We are obviously disappointed beyond measure, but emphasise that both Mario and his advisers have behaved within the terms of the contract.
"From Bayern Munich there has been nothing official on this matter up to this date."