Jack Lester misses out on this weekend's game against Fleetwood Town but Paul Cook is hopeful he will return for the Exeter City game next Saturday.
The veteran striker has been ruled out of the Fleetwood game with a back problem, the same injury that kept Lester sidelined against Plymouth Argyle on Tuesday.
Depending on Chesterfield's results, the game against Exeter City on Saturday 27 April could be the last match of the season and Lester's last match as a Spireite.
Speaking to Spireites Player, Cook said: "We only want him to go out with a really good send off. I think it's hugely important that people know, players like Jack are getting less and less at clubs now.
"Ideally, there would be no better stage than still having something to play for and the ground's rocking and bouncing. What's wrong with the thought of Jack getting us a goal?"
There is still a question mark over Lester's appearance next Saturday if his back injury persists but the manager is staying positive and believes he will have made a recovery. "With a week to go, you would say yeah," was Cook's reply when asked if Lester will feature in the Exeter game.
Since signing for the Spireites in June 2007, Lester has scored 83 goals in 195 league appearances and was part of both the League Two winning team in 2010/11 and the Johnstone's Paint Trophy winning side in 2012 where he led out Chesterfield at Wembley.