The waiting goes on a little longer for the quartet, as the decision has been made to name the squad on Thursday, May 9, rather than Tuesday, May 7 as originally planned, and Trevor says:
"They have put it back two days after Manchester United play Arsenal and Liverpool play Blackburn - it did seem a bit strange to do it before those games.
"It doesn't have to be announced until the 21st so he could have waited until the 12th, the day after the season ends, but the obvious answer is that they are flying off to Dubai that weekend for a break with their partners and players need at least three days warning to pack their bags, or unpack them, as the case may be - it is just the way the time schedule is.
"David, Trevor, Michael, and Joe will all be keeping their fingers crossed.
"There is the likelihood of a couple of them go, with David and Joe or Trevor, or maybe all three of those, with Michael the outsider - likely to go with the under-21s.
"The under-21s will be a good tournament, but to play even 20 minutes in the World Cup - in what we hope will be five weeks of the tournament - would be good, or even sitting on the bench looking at the standards you have got to set yourself.
"If you gave me the choice I'd probably have to say I would choose to go to the World Cup, even if I didn't play.
"Someone has to miss out, and there might be half a dozen of those that do go that might not get involved."
Trevor thinks the final selection will be about personality as well as performance, and adds: "You have to have the right type of professionals that might have to accept they are not going to play, but they are not going to brood and they will be good squad members and travellers who are encouraging the lads.
"Sometimes the obvious 23 doesn't quite work out at what you think because you have one or two who are the right types of characters and personalities, and you might leave one or two behind who, from a playing point of view, might have got in - but don't sit around well.
"So it is a case of trying to get the right blend and spirit. I am sure he has made up a lot of his mind; he perhaps just wants to check one or two things.
"As Glenn has said, Joe and Michael have got age on their side, but they want to be involved, and you can understand that.
"I know myself as a player that you build yourself up and desperately want to go, but what you don't want to do is brood if you are not in it, because even to be mentioned as competing in the frame is an honour - and the two 20-year-olds have done exceptionally well to be in there.
"They know they are close and in the thoughts of Sven and whether they are in or out, the carrot is there because after the summer they are straight in to the European championships in 2004 in Portugal - which I think will be a great tournament.
"Then there is the 2006 World Cup in Germany and I think that squad will be stronger than the one which will end up in the heat and humidity of Korea and Japan.
"There is plenty to aim for and we wish them well."
Trevor is convinced that Michael and Joe can have fruitful England careers while at West Ham, and says: "They have done well to progress as far as they have and we have got to make sure we can continue to get them to improve - and feel that we are making progress.
"There is speculation in the papers trying to entice them away, but we want them to be happy staying with us, feeling that the squad is getting better, and that there is a chance of competing for something.
"That is the only way we are going to move on. There is no point in selling better players, but to keep them happy you have to improve the squad and team as each year goes by."
Trevor admits he is not a fan of the FA Cup final being held before the end of the domestic season, and adds: "I think it is weird the way it is set up - the FA Cup used to be the last fixture but then I think the Premiership wanted to be the last game.
"From my point of view it is a bit farcical to have all the players hanging around for two or three weeks.
"Only a very small percentage of clubs are sweating on something. Obviously Manchester United and Arsenal are, and relegation is between Sunderland and Ipswich.
"I think the sensible decision next year is to have the FA Cup the last game as we have been used to in days gone by."
The occasion, of course, brings back happy memories of his headed goal in the 1980 final against Arsenal, and he says: "When the second goal went in at Highbury in the game the other day I heard the West Ham fans singing my name to remind them about 1980 and bring them down to earth with a crunch!"