Although neither Trevor nor Michael Carrick were picked for Sven's final 23, Glenn insists:
"Trevor could easily, at 33, still be playing fantastic football - you only have to look at Sheringham going to the World Cup at 36.
"But firstly he has to look at the European Championships when he will only be 31 and at the top of his powers.
"Trevor is already saying that he is looking forward to next year, and he is going to be focused on getting back into the England squad for the European Championships.
"It is exactly the same for Michael, who has got a long future ahead of him with possibly three World Cups to look forward to.
"It is easy to talk about David, who thoroughly deserves his position, as does Joe; you could equally make the same argument for Trevor being in the England squad, and Michael Carrick.
"Unfortunately those two didn't make the cut, but I still think it is a huge honour for the club to have two players going out there even though it could easily have been four.
"It wasn't to be, but by the same token that I am saying well done to David and Joe I feel I need to show the same amount of sympathy to Trevor and Michael.
"They have both had terrific seasons, they have been excellent this year, and have taken it in the right spirit."
Although Glenn was unable to meet the Queen on her visit to Upton Park on Thursday, he says:
"It was a great honour for the club and everyone who was there; I have already been fortunate enough to have met the Queen and the Duke of Edinburgh at Buckingham Palace a few years ago; it is a memory that will stay with me forever, and I am sure it will be the same for everyone who was at Upton Park on Thursday."
Glenn is hoping the side will be refreshed after their short break last week and says:
"It was an opportunity which we have not had too much this year to give the boys a few days off and I think it has shown in training, where they have been sparkling.
"The important thing is to win after two defeats, but there were positives from those games; our first 45 at Newcastle was probably the best we have played all year, and as Bobby Robson said it should have been over at half time because we created so many chances.
"I would expect Bolton to play 4-5-1 and be fairly defensive, but it is up to us to find a way of breaking them down."