The development comes after the Gigg Lane outfit received another loan from the Professional Footballers Association this week.
Commercial director David Manchester confirmed the Shakers have been experiencing some cashflow problems
Manchester said: "I can confirm at the moment we are in a transfer embargo.
"We have received a temporary loan again from the PFA to see us through the next three months with our ongoing expenses.
"Like many businesses at the moment we have a temporary cashflow problem which we need help with in the short term."