Winger CJ Hamilton has been sold to League One Blackpool for an undisclosed fee.
The 25-year-old made 173 appearances for the club, scoring 20 goals, since signing in the summer of 2016.
Director of football David Sharpe said: “We spoke recently with CJ and his representative regarding his future.
“CJ leaves One Call Stadium in good regard, with our best wishes and gratitude for his endeavours over the past four years.”