Midfielder Billy Clark has been told he will not be offered a new contract by Town at the end of the season. The 19-year-old came through the Blues academy before signing a one-year professional deal last summer.
Clark made three sub appearances for the first team late last season, but failed to break into the senior side during 2010/11.
The former Northgate High School pupil is the second of the 11 out-of-contract first and second-year pros to be released, Irish keeper Ian McLoughlin having been told that he will not be offered new terms earlier in the week.