City have spent several months getting Riggott back to fitness but just two games into his playing return he broke down again and now the decision has been taken to let him go.
The player himself will now take some time off before starting again elsewhere to try and revive a playing career.
Riggott himself felt he was unable just to sit around taking a wage when not able to contribute so the decision was reached.
Best of luck to Chris Riggott in the future.