Simeon Jackson Released
Defenders Marc Tierney and Elliott Ward are leaving along with academy graduates Tom Adeyemi and Korey Smith.
The club have already confirmed that striker Chris Martin will join Derby after making 117 appearances for the club, while youngster George Francomb will not be given a new deal.
Goalkeeper Lee Camp who joined in January, will be allowed to leave, and development squad players Ramil Sheriff and Scott Olumide Durojaiye have also been released.
Canadian international Jackson scored 21 goals in 86 appearances and helped fire the club to promotion from the Championship in 2011, scoring the goal that clinched promotion.
Korey Smith graduated from the club's academy, racking up 73 appearances and four goals, while defender Ward has made 55 appearances and scored one goal, but he did spend last season on loan at Nottingham Forest.
We wish them all well.