Nikola Vlasic was a a surprise name to be included on the West Ham retained list last week confirming he remains a Hammer for now.
Serie A club Torino had a €13m (£11.2m) option buy the player at the end of the season which is now reported to have expired.
West Ham had been subsiding his wages to the tune of fifteen percent but that loan will now officially end in 10 days time at the end of June.
The 25-year-old spent last season on loan at the Serie A outfit, scoring five goals from his 37 matches in all competitions
Torino are not flush with cash, and have numerous players on loan who they want to sign permanently at the end of this season.
The Italians are allegedly trying to get a discount on Vlasic with TuttoMercatoWeb claiming that the Turin based outfit have made an opening offer for the Croatia international worth €8 million (£7 million).