Cagliari are eager to retain pivotal defender Davide Astori beyond next season.
The Italy international is under contract with the Sardinian outfit until June 2015.
Astori, 27, who was a reported target of Manchester United and Southampton back in January, has enjoyed another solid campaign with Cagliari.
"We have offered Astori a contract extension and we are waiting," Cagliari sporting director Nicola Salerno told www.cittaceleste.it. "Obviously he has a lot of admirers in Italy and in England."
Astori, a former AC Milan youth player, is in his sixth campaign with Cagliari and has made 30 Serie A appearances for the club this season.