Hull City defender Liam Cooper will stay at Chesterfield for another month.
The 21-year-old, who scored for the Spireites in the defeat to Tranmere on Saturday, has had his loan deal extended until January 5.
He joined on an initial one-month deal at the beginning of November and has become a fans' favourite thanks to a run of impressive performances.
Cooper was later joined at the Proact Stadium by fellow Tiger Conor Townsend.
Steve Bruce has told his young players to build up first-team experience in order to challenge for a place in City's first team.
