Simon Tracey has been named as Chesterfield's new goalkeeper coach following Matt Duke's departure to Sheffield United.
Tracey, who joins the Spireites after a two-year spell at Carlisle United, previously coached at Rotherham United and Barnsley.
Manager Jack Lester is delighted to have been able to bring in the 49-year-old as Duke's replacement. He said: "Simon is an extremely good coach who has great knowledge of the game and knows the division very well."
Carlisle boss Keith Curle praised Tracey for his "professionalism, dedication, diligence and commitment".
Curle added: "He’s been nothing short of superb. He has a fantastic work ethic and his programme with the goalkeepers has always been meticulous and well structured. I know that every keeper we’ve had has taken a lot away from having worked with him.”
Duke has left to become the new head of academy goalkeeping at Sheffield United. Commenting on his departure, Lester said: "Matt has been great to work with and I would like to wish him all the very best for the future.
"He had already accepted the offer to join Sheffield United before I came in and I appreciated the fact that he agreed to stay until we'd found his replacement."