Galatasaray president Abdullah Kavukcu announced Victor Osimhen would make a choice about his future in one month.
Osimhen joined the Yellow and Reds on loan from Napoli back in September.
Victor Osimhen has scored 26 goals and five assists with 30 games for Turkish Süper Lig champions.
Galatasaray wish to sign the striker permanently, but they are competing aggressively against several top-profile European clubs.
“Osimhen will tell us his decision (about his future) next month,” Kavukcu told Nevzat Dindar.
“At the moment, the top five clubs in the world are also interested in him.”
The 26-year-old is currently on international duty with Nigeria.