Midfielder Kevin Horlock has been told he will not be offered a new deal at the end of the season. The 33-year-old, who was previously with Joe Royle at Manchester City, will be allowed to leave Town on a free transfer should another club show interest during the transfer window.
Royle said: "At the moment there are no plans to offer Kevin a new contract.
"I've spoken to him and said that we are well covered in the midfield department now and that if a club shows an interest in him, we won't stand in his way.
"Making him available now just means he has more chance of getting fixed up with a new club before the summer when there will be a whole number of players looking for jobs."
The former Northern Ireland international joined the Blues on a free transfer from West Ham in the summer of 2004. Since then he has made 49 starts and 13 substitute appearances but has failed to score a goal.