Gareth McAuley, Claudio Yacob and Boaz Myhill have left West Bromwich Albion following the expiration of their contracts.
Manager Darren Moore has opted not to offer new deals to the trio as he prepares his team for life in the Championship.
McAuley, who was recently linked with Rangers, made 227 appearances for West Brom during a seven-year stay.
Argentine midfielder Yacob joined the Midlands outfit from Racing Club in 2012 and made 175 appearances for the Baggies.
Goalkeeper Myhill was the longest-serving of the three, having signed for the club in 2010 from Hull City.