Yet manager Warnock is hopeful he can bring someone in if he can balance the books by offloading a few fringe players.
"I don't think it's 100% that no one will be coming in during the transfer window," he told the Croydon Advertiser.
"I'm still looking around for another striker. If I get a few of the fringe players out on loan then I think I can talk Simon into it.
"It's pretty clear that we could do with someone who can find the net on a regular basis."