Swansea will reject the advances of Besiktas, as the Turkish club attempt to lure Fernando Llorente away from the Liberty.
Paul Clement is hoping to pair the Spaniard with incoming Chelsea striker Tammy Abraham.
Abraham is expected to sign a loan deal with the Swans when he returns from the U21 European Championships.
Besiktas view Llorente as a direct replacement for Vincent Aboubakar, who has been linked with a move to Newcastle.