Kettering Town caretaker boss Mark Cooper is concerned they will soon not have enough players to fulfil fixtures.
The transfer embargo means the Poppies cannot replace the injured Jaime Navarro or suspended Phil Ifil, while Jerel Ifil is struggling with injury.
Cooper told BBC Radio Northampton: "I'm even more concerned this week, when you see what's gone on.
"It's like we're in a battle and we haven't got enough ammunition. That'll continue if we don't get bodies in."
He continued: "I'm speaking to the Conference and trying to get them to allow us to bring three or four in.
"But I would think there's a chance of more exits, especially the boys on non-contract. If they get offers elsewhere, then of course they're going to look at that [as a] bit of security."
Because of the ongoing problems, players were only called in to start their week's training on Thursday, ahead of the Blue Square Bet Premier match against Forest Green Rovers on Saturday.
"It's been difficult for them with not being paid, and things that they've been promised and not had, so I don't think it's right for me to keep asking them to come in for training.
"We get them in for two days and see if we can get a team out for Saturday," said Cooper.
The club's future appears to depend on finding investors but while they are said to have been in talks with four interested parties, only former commercial director Lee Thorn and his consortium have identified themselves as potential investors.
Cooper hopes investment should come in next week - and has delayed a decision on his position.
"The complicated nature of [things at] the club at the moment have made it more difficult and time consuming," he added.