"I had a fantastic 18 months at Carlisle and will never forget the backing I received during my time at Brunton Park," Garner told the club's official website.
"It was an extremely difficult decision to leave the club but, at this stage of my career, I simply couldn't turn down the chance to play in the Championship.
"I would have loved to have played at a higher level with Carlisle but unfortunately, despite coming so close, it wasn't to be."



