Derek Johnstone believes only Dominic Ball could return to Rangers.
The Sunderland manager is expected to be busy in this summer transfer window.
West Ham are reportedly keen on Villarreal hitman Cedric Bakambu.
The Glasgow Rangers manager worked alongside the Northern Irishman at Watford.
Plenty of teams in Italy have been linked with the Leeds United striker.
The Owls will line up against Hull City for a place in the Premier League.
The Reds had been linked with a move for the Hoffenheim player.
Rangers are reportedly still keen to lure Daniel Bentley to Ibrox.
Besiktas midfielder Veli Kavlak has been linked with a move to West Ham United in the summer transfer window.
The former Liverpool boss has had two interviews with the Scottish Premiership side.