Sevilla are chasing Czech Republic international Tomas Sivok.
Sivok is off contract from Besiktas.
His representative, Jiri Mueller, claims a club from the English top flight is rivalling Sevilla and Besiktas for his signature.
"We have opened official talks with Sevilla and would like to have it resolved as soon as possible," Mueller told CTK.
Mueller added: "We have registered interest from a club from the Premier League and Besiktas have come back into the race, as they want to keep Tomas."