Paulo Dybala's future will be decided within the next two weeks, says Palermo chief Maurizio Zamparini.
Cardiff will allow long-serving Kevin McNaughton to leave this summer along with Danny Gabbidon and Nicky Maynard.
Palermo president Maurizio Zamparini insists Federico Balzaretti will remain in Sicily next season despite the defender attracting attention from Serie A's top clubs.
The Italian left-back enjoyed another solid campaign for the islanders and is a reported target of Napoli, AC Milan and Lazio this summer.
"Balzaretti will not leave," Zamparini said to Gazzetta dello Sport. "He will remain at Palermo."
Palermo are expected to offer Balzaretti a contract extension with the player's current deal ending next summer.
The 30-year-old is currently on international duty with Italy at the European Championship in Poland and Ukraine.