Key Spireites defensive duo Dan Jones and Ian Evatt are fit and ready to go as the club gets into its first pre-season gear next week.
Jones has been out of action since November with a fractured ankle and his season was brought to an end, despite a recovery reserve team appearance, when complications arose during the left-back's recovery.
However, the 28-year-old saw a specialist in Manchester this week and has finally been given the green light as he and the squad get set for the EFL kick-off on August 6 at Oxford United.
Head of sports science and medicine, Rodger Wylde, picks up the story: "Dan got the all-clear in Thursday, but we knew that anyway from the progress he had been making with his training. We knew we'd got to the root of the problem, which was a different one from his original fracture.
"There were a few issues we had to get to the bottom of: his shoe size, his own personal over-training but now it's all been sorted. He's ready now for normal training, he's proved his ability to train now through the summer - where he's been in regularly."
After his lengthy lay-off, Wylde says that Jones will actually start pre-season ahead of his team-mates, fitness-wise: "When you come back into pre-season training you start softly and make a steady build-up.
"He'll be ahead of that now because he's worked hard, so he'll easily cope with that build-up and get involved in all the functional work as they do it."
There's similarly positive news for centre-back Evatt, who after a Achilles injury in the final game of 2015 has not featured for the Spireites, but is now ready to get going again.
"Ian had a tough time after being mis-diagnosed by two different specialists," explained Wylde. "He was back at the end of the season and probably running at about 90%. If that's where he was then he's now 100% to join in when pre-season gets underway."