Curtis Davies is one of nine players released by Cheltenham Town after being relegated from League One.
The 39-year-old former Derby County, Hull City, Birmingham City and Aston Villa central defender scored once in 39 appearances for the Robins after joining as a free agent in the summer.
Jamie Pardington, Ben Williams, James Olayinka, Josh Harrop, Adulai Sambu and Greg Sloggett will also leave the club when their contracts expire this summer.
Cheltenham have triggered a contract extension for Tom Bradbury as discussions continue over new deals with Luke Southwood, Sean Long, Will Ferry, Liam Sercombe and George Lloyd.
The Robins already have 10 players signed for next season.
