PSG defender Thilo Kehrer is the subject of a bid from West Ham United.
The Hammers are said to have offered around £10 million for the central defender's signature.
According to the Daily Mail, PSG are seeking a significantly higher fee if they are to part with the 25-year-old.
While Kehrer is not first choice at the Parc des Princes club, he is a versatile squad player.
The defender is also attracting interest from Spanish giants Sevilla.
West Ham boss David Moyes admitted recently he would try and sign another defender.