Wolves defender Christophe Berra is attracting rival Premier League interest.
The Daily Mail says Newcastle United, Blackburn Rovers and Bolton Wanderers are all keen on the Scot.
Newcastle have been rebuffed in their efforts to sign James Tomkins from West Ham, while Bolton, who hope to wrap up a £2.5m deal for NY Red Bulls' Tim Ream, are considering whether to add another defender to replace Chelsea-bound Gary Cahill.