Kettering Town manager Mark Stimson says losing assistant and goalkeeping coach Scott Barrett is a "blow".
Barrett had been with Stimson at all of his former clubs but Town's financial issues meant they could not extend his contract.
Stimson told BBC Radio Northampton: "We've been together a long while and it has been difficult.
"Fingers crossed an investor or new owner comes in who can have a manager and an assistant."
Stimson added: "Scott will be the first person I'll call."
The Poppies, currently 20th in the Blue Square Bet Premier, have two matches against Luton Town over the festive period.
The squad have come to an agreement with chairman Imraan Ladak regarding wages, and some players were paid on Monday 19 December.
Others are expecting their up-to-date salaries in early January.
But the squad and staff will have to make their own arrangements for the trip to Kenilworth Road, with coach travel not being possible.
"We've had more turn up to training this week and that's a massive plus. The banter is decent - I'd like it to be more, but with what they've been through, it's hard to have a smile and a joke.
"[However] I'll be hoping the players get in on time because we've got to make our own way to Luton."