Moyes suffered another of those hefty punches he repeatedly talks about having to take on Sunday as United were beaten 2-1 by Swansea in the FA Cup.
It represented only the second time in 30 years the Red Devils have been beaten in the third round of the competition and meant they were losing for the fifth time on home soil this season, and the fourth in six games.
Yet, for all the speculation about new arrivals to bolster a flagging squad during the transfer window, Moyes realises it is by no means certain they will be secured.
"I have said I will try to get players but it will probably be doubtful in January. I have said that quite consistently," he said.
"There is an urgency that we would like to bring players in but are those players available in January?
"There is no point in me hyping it up and saying we are because players we would like to bring in are probably not available."