For Glen, currently in the second month of a loan spell at Millwall, promotion to the U20s would be quite a step, taking him up from the U19s, but he says:
"I will have to wait and see; I don't know anything yet."
Either way, though, the aim of playing in West Ham's first team is getting ever nearer as he gets regular competitive practice at Millwall.
"I am not too sure how many games I have played but it is going fine and I am really enjoying it," he says.
"It is different from the reserves but I obviously can't compare it to the Premiership.
"I am picking up little things as the games go by.
"I am taking it one game at a time but I will enjoy coming back."
Glen, who helped Millwall to a win at Stoke at the weekend, played in the infamous game against Leicester the week before in which Dennis Wise faced his former Leicester team mates recently.
Was he not wary of that one, given the bad bloos between Wise and his erstwhile colleagues?
"I didn't think that way," he says, "it was just another game, though we knew there would be more tackles than norm - but none of the lads minded that."
Glen had two roles in that game, switching from right back to one of a back three midway through the first half.
"Brian Deane got sent off early doors so we changed it; I am fine with that but I think I am a right back," he says."
He is convinced by the time he returns to the Hammers things will be on a more even keel, and he concludes:
"I obviously want to see the boys do well but I reckon they will get through it; they are too good to get relegated by far."