The 20-year-old extended his Dortmund contract in March which sees him tied to Borussia until 2016, with a clause in his deal allowing him to leave in 2013 for a minimum of 37 million euros, reported German magazine Sport Bild.
He can also leave at a later date before his deal expires with a sliding scale of cost.
Goetze has attracted plenty of attention after Dortmund's impressive performances in the Champions League with the German champions top of Group D ahead of Real Madrid, Ajax and Manchester City.
Gotze's agent Volker Struth says his client has no plans to leave Dortmund next year.
Mario Goetze can quit Borussia Dortmund for 37m euros, says report
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