Mark Warburton spent almost two years as manager of Ibrox side Glasgow Rangers.
Glasgow Rangers appointed Steven Gerrard as the Ibrox club’s manager in the summer.
Gerrard has brought 10 new players to Ibrox this summer.
Celtic boss Brendan Rodgers has confirmed talks with the Hull City defender, who it's claimed could have been an Everton player.
Ibrox side Glasgow Rangers were linked with the 27-year-old two years ago during Mark Warburton's reign.
Warburton leads another ex Nottingham Forest boss in the running to become Bradford City's next manager.
Nottingham Forest manager Aitor Karanka wants to bring Rangers goalkeeper Wes Foderingham to the City Ground - after Mark Warburton tried and failed.
Ipswich are interested in signing Jason Cummings from Nottingham Forest ahead of Rangers - could hiring Mark Warburton help them achieve it?
Derby County boss Gary Rowett has come under fire from supporters.
Nottingham Forest have struggled to improve since the arrival of Aitor Karanka.