The following provides a round-up of the three deals agreed today (Monday).
Young defender Ashley Carter, who is on loan at Chesterfield from Wolverhampton Wanderers, has extended his stay at the Proact Stadium until the end of the season.
The 19 year-old centre-back joined the Spireites on the last day of the transfer window, initially for a month.
Carter made his debut at Scunthorpe United and retained his place in the starting line-up for the match at Rochdale.
Meanwhile, striker Armand Gnanduillet has made a loan move to Sky Bet League 2 side Oxford United until the end of the season.
A clause in the agreement allows the Spireites to recall the Ivorian at 24 hours notice after the initial 28 days of the loan period.
Gnanduillet, who had a previous spell on loan at Tranmere Rovers, has scored three goals for Chesterfield this season.
Another departure from the Proact Stadium on Monday saw winger Mark Duffy return to Birmingham City after making three appearances during a month on loan.