"It is a bit of a surprise, as it happened so quickly, but obviously I will give my all," he says.
"I am excited about the move, it is a good standard, and Mark McGhee said I will be starting at Norwich on Saturday."
He already has friends at the club, and he feels that will help him settle in.
"I know a few of the boys there, including Ben Murray who I went to school with," he says.
Whether the loan spell is extended is, as yet, unknown, but Glen would have no qualms about that.
"I might be coming back at the end of the month, or I might be staying another month - we'll just have to see.
"I will try to get in the first team at West Ham before the end of the season - that is the ultimate aim.
Glen's last competitive action was last week for England against Yugoslavia at under-19 level, and he admits: "It was stupid drawing 2-2 after being two goals up - a joke."
But now the stage is set for the nitty gritty of domestic football, and Glen, who can play as a right back or centre half, has a simple and dismissive message for those doubters who believe he should not be making a move, however temporary, across the river: "It doesn't bother me."