Sky Sports News adds that in addition to Marsch, England Under-21 boss Lee Carsley, ex-Sunderland coach Tony Mowbray and former Nottingham Forest gaffer Steve Cooper make up the shortlist. The four-man list will be narrowed down, but Cooper is unlikely to entertain an approach, as he'd rather wait for an opening in the Premier League.
After falling from 6th place in the Championship to 15th under Rooney - who won just two out of 15 games with the club - the Blues are back in action at the weekend in the FA Cup against Hull City. Marsch, meanwhile, will continue his role as a CBS Soccer analyst in Europe until he finds a new managerial gig across the pond, with the latest rumor being a potential American link-up in Birmingham.