He was released by Paul Ince at the end of last season, shortly before the former England international left to manage Blackburn Rovers.
Keeper Ian Bennett has signed a one year extension to his contract at Sheffield United. Bennett also played for City at Highfield Road and was loaned to the club from Birmingham City. The Sky Blues did try to sign him when his contract with Brum expired but Bennett opted for Brammal Lane instead.
Claus Jorgensen has signed a two year extension to his contract at Blackpool FC.