The Gazzetta dello Sport claims Zenit St Petersburg have made an offer to Juventus for the co-owned Frederik Sorensen.
The 21-year-old, whose co-ownership agreement with Bologna was renewed last month, is apparently wanted by the Russian giants.
Zenit are ready to hand over €9m for the versatile defender who can be used in the middle or as a full-back.
Bologna, however, believe the Danish youth international should cost much more as they value him at €15m.
Juventus brought Sorensen to Italy in 2010 from Lyngby for a fee of €150,000 in total after an initial loan move.
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