The former England Under-21 keeper rejected a new contract at Swindon Town and will remain in League One after he was relegated with Town last season.
Evans spent five years at Chelsea as a youngster but never made an appearnce for the current league champions. He did have loan spells at Bristol Rovers, Q.P.R. and Leyton Orient.
He joined Swindon, his hometown club, in the summer of 2003 and went onto make 118 league starts and 9 cup starts.
Dispite relgation at Swindon last year Evens picked up several Player of the Year awards.
Evens is set to sign a deal that will keep him at Bloomfeild Road for two seasons.