Striker Armand Gnanduillet has agreed a two-year contract with the club which will be rubber-stamped once the relevant paperwork has been processed.
The 21-year-old put pen to paper on the agreement late on Thursday afternoon.
Gnanduillet, 21, joined the Spireites on a short-term contract in January after impressing on trial.
He has made four starts and eight appearances as a substitute, scoring three goals.
Born in France, Gnanduillet has represented the Ivory Coast at under-21 level.