Sport1 says Bayern sporting director Hasan Salihamidzic has held at least three rounds of talks with the agent of Mane, Bjorn Bezemer.
However, no move will be made until they receive a green light from Mane.
The striker wants to focus on the Champions League final against Real Madrid on Saturday and also hasn't yet made a decision about whether he wants to leave.
Mane has just over 12 months to run on his current deal and there's a belief at Bayern that he is ready to make a move.
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