Chris Morgan and Ugo Ehiogu are the only recognisable duo who are currently available for selection at the Lane. Matthew Kilgallon will sit out the next two encounters with Preston and Bristol, while Greg Halford who can fill the role is recovering from an injury which he sustained last month.
The Gaffer said: "I think I will hold off trying to bring someone else because, for one thing, there is a credit crunch and it could be an expensive business without really benefiting us.
"I would have to borrow someone for a month and it could cost us £30,000 - £40,000 with no guarantee that he would play.
"If Ugo and Morgs don't get injured we would be OK anyway so we will probably go with them unless the situation changes."