Carlisle manager Graham Kavanagh could be forced into the loan market following news defender Conor Townsend has broken a bone in his foot.
Carlisle are keen on extending Conor Townsend's loan from Hull City, while Cameron Stewart is happy at Charlton.
Carlisle United have signed Hull City defender Conor Townsend on loan for an initial month.
Conor Townsend will stay with Chesterfield until the end of the season after extending his loan from Hull.
Conor Townsend is happy to play out of position if it will mean he gets a starting role for Chesterfield.
Paul Cook has bolstered his Chesterfield squad with the signings of MK Dons striker Jay O'Shea and Hull defender Connor Townsend.