U23s manager Paul Heckingbottom looks set to take the job on a caretaker basis while the Blades find the right man to take the club forward in the long-term. Here's a rundown of the SkyBet's current front-runners for the job, ranked from the worst to best chance of becoming Sheffield United' s next manager:
9. Steve Bruce - Current odds:14/1
Current job: Newcastle United. Career win percentage: 37.8% Photo: MICHAEL STEELE
10. Mark Hughes - Current odds: 14/1
Current job: Unemployed. Last club: Southampton. Career win percentage: 37.4% Photo: GLYN KIRK
11. Garry Monk - Current odds: 12/1
Current job: Unemployed. Last club: Sheffield Wednesday. Career win percentage: 37.1% Photo: Nigel Roddis
12. Frank Lampard - Current odds: 11/1
Current job: Unemployed. Last club: Chelsea. Career win percentage: 48.2% Photo: IAN KINGTON