Wolves chief Jez Moxey says they're not interested in selling Steven Fletcher.
Sunderland have made a bid for the Scot.
Moxey told the Express and Star: "We are not getting drawn on offers for players in or out.
"Our best players are not for sale, we want to keep them and build the strongest possible team for the season ahead.
"We will do everything we can to retain the players we want to keep and continue to look to strengthen with new signings."