"There can still be loan options and we can still buy somebody - it is really the Premiership clubs that can't, until January," he explains.
"We are not restricted by that though, as we haven't got that much money, loans are the obvious area.
"Again, it is identifying someone - do you go for a long term or short term loan?
"And you have to get the balance of the numbers you are allowed in the whole season.
"The trouble is one week there is a need in one position then a couple of weeks later someone else has a little setback - there is not quite the depth needed and we need to give Alan those few extra options."
"It will be interesting, and at least Alan can come to watch the Burnley game first hand whereas up to the moment he has been relying on videos."
Trevor is assured there will be a smooth handover to Alan Pardew, and he adds:
"He is going to come in beforehand to meet the lads and sample for the first time the Upton Park atmosphere.
"I will go back into my role as a director, but I get on well with Alan and I am sure we can have some discussions.
"But the main factor that everyone has got to recognise is that Alan will very much be totally in charge, it will be his decisions, and that is the way it has got to be.
"The board, staff, fans, and players, will then hopefully give him total support; I think he is the right selection and we are sure will give us a good opportunity to challenge for a promotion position.
"But we can see there is work to be done if we are to achieve one of those two automatic places."
Meanwhile, West Ham's U19s lost 1-0 to Wimbledon on Friday.