Burnley have released the experienced quartet of Graham Branch, Danny Coyne, John McGreal and Frank Sinclair. The four have not been offered new deals by boss Steve Cotterill, who has also placed midfielder Garreth O'Connor, 28, on the transfer list.
Branch, 35, ends a seven-and-a-half year stay at Turf Moor.
McGreal, Coyne and Sinclair have spent three years at the Clarets, with Sinclair, 35, moving on after ending the season on loan at Huddersfield.