Striker Mani Dieseruvwe was the final part of the quartet of deadline day Spireites signings, making his loan move from Sheffield Wednesday permanent.
The 19 year-old initially arrived at the Proact Stadium in January on loan and made his Spireites debut off the bench in the match at Swindon Town last month.
Having impressed the management staff in training, Dieseruvwe has now signed on with the Spireites for the next 18 months.
"I'm very happy to be here," said Dieseruvwe. "I've enjoyed my month here. I haven't played a lot but I've spoken to the gaffer and he's said that I'm in his plans for the future.
"I've signed an 18 month deal so in the next year and a half I can progress, get into the first team and score some goals for this club."
Having had a month to assess his new side, the new signing reported back on the club he's now a full time part of.
"The squad's very good," he said. "There's a lot of togetherness. The manager says to keep in touch with the squad and not get upset if you're not in the team, football can change and you might get called upon.
"It's a positive mood around the ground at all times so I'm just happy to be here and happy to be here permanently.
Dieseruvwe is looking forward to the challenge of now pushing for the first team, and hopes to utilise his teammates to get there.
He said: "You see new players coming in and it's all about competition. You look around you and see what you can learn from other players and then you hope in the future that you get your chance, then you have to take it to stay in the team.
The full recorded video interview is available to watch on Spireites Player.