Defender Marcus Bignot is in talks with two unnamed clubs after leaving QPR.
The 33-year-old, who made 193 appearances in two spells for Rangers and captained them last season, was recently on loan at Millwall.
"I'm disappointed to be leaving, but I do so with many fond memories. I'll remember the promotion party at Hillsborough for the rest of my life.
"It was also tremendously satisfying to skipper the side to Championship survival last season," Bignot said.