Besiktas forward Michael Eneramo has undergone a heart surgery and may be out of action for up to five weeks.
The former Esperance of Tunisia skipper was discovered to have a heart beat rhythm disorder, but was later cleared after a third round of examinations.
According to Fanatik, Football Federation of Turkey will make the final decision about the future of the big Nigeria striker.
The federation’s medical board report is expected next week.
Besiktas reached an agreement with Eneramo for a two-year deal after his contract at another Turkish club Sivasspor ended this summer.
The top Istanbul club are currently in Austria for pre-season training ahead of the forthcoming campaign.