Feyenoord are in talks with a mystery South Korea international - believed to be Ulsan star Lee Chun Soo.

Algemeen Dagblad says Feyenoord are reluctant to name the player they're in negotiations with, but reports that Lee is the man in question.

The former Real Sociedad and Numancia midfielder is desperate for a return to Europe and his K-League club have declared they won't stop him leaving should the right offer arrive.