Butterfield and Richardson exit Saints
Southampton have released eight out-of-contract players including Frazer Richardson and Danny Butterfield.
Richardson joined Saints in 2010 and made 64 appearances in all competitions during his stay but was unable to force himself into the side last season.
Butterfield spent the final six weeks of last season on loan at Bolton in the Championship and only featured twice for Saints last term, with both of his appearances coming in the Capital One Cup.
Goalkeeper Tommy Forecast joined Southampton in 2008 but failed to make a single first-team appearances during his five-year stay and has now been released by the club.
Dan Seaborne, Ryan Dickson, Ben Reeves, Sam Hoskins and Alberto Seidi are the other players on the look-out for new clubs this summer after seeing their deals at Southampton come to an end.