Bayern Munich attacking midfielder Mario Gotze has admitted that it will be hard returning to Signal Iduna Park as an opponent of Borussia Dortmund.
The German international made the controversial switch to Bayern in the summer and could well face a hostile reception from the fans who once supported him.
"[This will be] one of the toughest moments of my career," Kicker quotes Gotze as saying.
"[However, it is] something I've just got to come to terms with, because it was my decision to leave."
Bayern could move seven points clear of Dortmund with victory on Saturday.
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