Hurst, who is a left sided Midfielder was due to see his contract expire at the end of this season before Neil Warnock has stepped in to keep the 21 year old at Bramall Lane until June 2008.
During his spell at the Lane Hurst has made all but a few substitute appearances, these mainly in the League Cup. His only Football League game he came on for United was in September 2003 when the Blades lost at home to QPR 2-0.
He is currently on loan at Chesterfield until December when he teams up with former Blades Wayne Allison and Shane Nicholson. Whilst at Saltergate Hurst has played six games and scored once.