According to the Daily Mail, the £3m-rated winger has informed his employers of his desire to be sold, amid interest from West Ham, as well as from Fulham and Lille.
The Hammers are already alleged to have had an offer for the 23-year-old rebuffed by Leeds, but they may now come back with an improved offer should Gradel attempt to force an exit from Elland Road.
Gradel was named United's Player of the Year last season after a brilliant campaign that saw him net 18 times in 44 appearances, but it would seem he sees his immediate future away from Leeds.