"Gotze definitely fits that profile, but he’s a Bayern Munich player, so we haven’t held any concrete talks."
While Liverpool target Marco Reus has suffered another injury, putting the Reds' £46million bid in doubt.
Brendan Rodgers is reportedly considering a move for Reus as a replacement for Raheem Sterling.
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However, Reus has had a reoccurrence of the ligament problem that forced him out of last year's World Cup in Brazil.
Borussia Dortmund tweeted: "Marco Reus has a slight ligament problem. It's nothing serious."