New Sunderland boss David Moyes says the club need to make significant progress before they can attract players of the calibre of Marouane Fellaini.
The Manchester United midfielder played at Everton for Moyes, who then took him to Old Trafford in 2013.
"I'd love to have that level of player," said the Scot. "Realistically, that's probably not going to happen."
"We've got bids in for players just now," added the 53-year-old Moyes, who signed a four-year contract on 23 July.
"We're trying to strengthen the squad and I'm hopeful some of them will come off. In this market at the moment, you just never know."