Palermo have warned Europe's elite that they will have to pay at least €40m (£30.6m) to tempt them into selling Paulo Dybala.
Arsenal and Borussia Dortmund have been linked with January moves for the 21-year-old forward, who has taken Serie A by storm this season.
Dybala is rated as highly as his Argentine compatriot and former Palermo attacker Javier Pastore, who cost Paris Saint-Germain €39.8m in 2011, and club president Maurizio Zamparini will be demanding a similar fee for his latest star.
He told Sky Sport Italia: "Dybala is a world-class player who is being compared to Javier Pastore.
"Hence, his price tag matches the skill - we are talking €40m and upwards.
"So far offers for him have only come in obliquely because they know how tough I can be [when negotiating]."
Dybala has scored nine goals and assisted six more to help Palermo to 10th in the table in their first campaign back in the Italian top division.
