Capable of playing anywhere across midfielder or at full-back, the ex-Lincoln man also possess a long throw which could well be a vital weapon in attack, especially's with Town listing the likes of Crane and Sestanovich amongst their ranks.
Fleming was suspened by the U's last season for a 'breach of club discipline' along with fellow midfielder Justin Walker.
The former Coventry youth brings a colourful history to Blundell Park with him.
Fleming is expected to sign a contract either today or tomorrow.