Stoke City winger Marko Arnautovic reportedly has a buy-out clause in his contract that means he could leave the club for £12.5m this summer.
According to PA, the buy-out clause will be triggered when Arnautovic enters the final year of his four-year contract at the end of this season.
However, Stoke have been in negotiations with the Austrian's team the last couple of months trying to tie him down for the foreseeable future.
The 26-year-old is reportedly holding out for wages which would see him surpass Xherdan Shaqiri as the club's top earner.
The Potters paid a reported £2m to sign Arnautovic, who is the club's top scorer this term, from Werder Bremen.
