Schalke fullback Sead Kolasinac admits new contract talks are at deadlock.
The defender is said to have rejected S04's latest offer.
"I have expressed my own opinion internally. I know the manager does not put me under pressure," said Kolasinac.
Bild says among clubs keen are Manchester City, Arsenal and Liverpool.
Schalke chief Christian Heidel said: "I respect that Sead has not yet decided. There is no ultimatum."