Centre-half Liam Cooper has stated the lure of first team football was the main reason behind his decision to commit the next two-and-a-half years to the Spireites.
The 21-year-old initially joined the club from Hull City on a month’s loan in November before extending that deal until the New Year.
He has been a regular for Paul Cook’s men and has built a solid understanding at the heart of the Chesterfield defence alongside captain Sam Hird.
Cooper said: “At this stage of my career I need to be playing football week in week out.
“The manager has shown faith in me and given me a great chance here at Chesterfield and I’m looking forward to what lies ahead.
“I want to play as many games as I can to get the club back to League One.”
The no nonsense defender made just 17 appearances for his hometwon club after making his Tigers debut as a 16-year-old in a League Cup clash against Swansea in 2008.
Cooper also tasted Premiership football when he went toe-to-toe with a flying Fernando Torres in a game against Liverpool at Anfield.
He added: “It’s always hard leaving your hometown club but I want to be playing week in week out and it didn’t look like that was going to happen at Hull.
“I didn’t want to sit on the bench - I want to be playing football, there’s nothing like it in my eyes.”