Palermo president Maurizio Zamparini has conceded that there is only a 10 per cent chance of Javier Pastore remaining with the club.
The 22-year-old Argentina midfielder has been linked with a move away from Stadio Renzo Barbera having arrived at the club in 2009 from Huracan for 19million euros.
A host of leading European sides have reportedly been tracking his situation this summer, with Chelsea, Real Madrid and Barcelona all rumoured to be interested.
Zamparini, who revealed Palermo have received an offer of 50million euros from an unnamed club for Pastore, admits it is highly unlikely the player will be at the club in the coming campaign.
"The possibility that he (Pastore) stays next year is 10 per cent," he said in Corriere dello Sport.
"He is now in Argentina, calm and preparing for the Copa America. His agent is evaluating three or four offers.
"I can confirm that yesterday an offer of 50million euros arrived from a foreign club.
"The player has no preference regarding his destination. For me he is worth more than 50million euros because in two or three seasons' time, his price will be double."
Pastore is under contract until June 2015 and was the team's leading scorer in Serie A last season with 11 goals.