It was a busy transfer deadline day for the Spireites with four players moving in and Eoin Doyle going out.Young Sheffield Wednesday striker Mani Dieseruvwe was signed on a permanent basis after a spell on loan, penning an 18-month contract.
Wednesday have also loaned 22-year-old Caolan Lavery to Chesterfield on an emergency loan until March 7, with the possibility of extending the agreement.
Experienced Birmingham City winger Mark Duffy, signed on loan for a month, provides manager Paul Cook with a further attacking option while Wolves teenager Ashley Carter adds extra central defensive cover after being secured on an initial 28-day youth loan.
Cook is delighted to have been given the backing to strengthen his squad, which was made possible due to the sale of Doyle to Cardiff City after the two clubs agreed an undisclosed seven-figure deal.
"I'd like to thank chairman Dave Allen, chief executive Chris Turner and the board for allowing me to bring four players in," said Cook. "We identified areas of the squad we needed to strengthen and we feel the players who have come in are of the right calibre."