Fanatik says Arsenal are interested in securing his signature.
It is said the Gunners have tabled a £14.4m bid (€16m) for the Turkey international.
Trabzonspor chief Muharrem Usta made it clear that he has no intention of selling him.
“I want to see Yusuf here for our 50th year anniversary squad," Usta said.
“He will be sold when the time is right, Yusuf will be an ambassador for the club and reach the highest level."