The Blues boss has already added five new face's to his squad this month but he still thinks he needs to sign a new centre-back before the transfer window close's in two weeks time.
"I am looking to bring a couple in to strengthen the squad and there are still 15 days to go so that will be a priority," said McLeish.
"The centre-back position does concern me because we are a little bit short there in terms of numbers and so I would like to improve that."