Galatasaray vice president Ibrahim Hatipoglu remains confident the club will sign Victor Osimhen on a permanent transfer.
The Yellow and Reds are keen to retain Osimhen after his remarkable loan spell at the club.
Osimhen helped Okan Buruks side win the Turkish Super Lig and Turkish Cup last season.
The powerful striker registered 37 goals and eight assists in 41 appearances across all competitions for Galatasaray.
The Nigerian has already turned down a move to Saudi Pro League outfit Al-Hilal.