Tope Obadeyi has signed a one-year extension to his contract.
Goalkeeper Kyle Letheren (29), who starred for York in last season's relegation side has been training with Athletic alongside former scholar Ryan Leonard who is also hoping to win a professional deal.
Former Latics player Dominic Poleon has left Wimbledon to sign for Bradford for an undisclosed fee. Another former player on the move is free agent Chris O'Grady. He was at Burton Albion on loan from Brighton and has now signed for Chesterfield.