Besiktas have joined local rivals Galatasaray in the pursuit of Henry Onyekuru.
Besiktas have contacted Olympiacos on the 25-year-old Onyekuru, according to Fotomac.
Onyekuru thrice played on loan for Galatasaray.
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The Greek champions paid five Million Euros to AS Monaco for the Nigeria star, who has a contract till 2025.
They will expect an amount close to what they paid last year for a transfer to be finalised.
Onyekuru did not exactly set Greece on fire as he only scored a goal and provided an assist last season.