Under the tutelage of manager Jean Tigana, Fulham have become renowned as very much a pure passing side, very patient and content to hold possession for lengthy periods of time.
The boss says this style of opposition will demand a slightly different approach from the team.
"I think that might be right," reflected Glenn. "The two away games we've had certainly, Everton and Charlton are games where we felt we really had to dig in deep early doors.
"This one is going to be a bit different. You dig in in a different way, you're concentration has to be a little bit different.
"They are a good passing side, they'll be patient and you have to concentrate on your defending against them.
"You have to defend well, not so much in a battling 50-50 challenges sort of way and staying tight. The game will be a little bit more open in the sense that when they lose the ball the game will be open. The same if we lose it at times, because we are a passing side."
"There will be an expectation of a different game, although it is a small pitch there. It's a pretty cramped pitch so that brings it back in a bit and it could be a bit more of a battling game."
We gathered six points and a cup win against Fulham last season, but Glenn warns against any form of complacency.
"They are a good footballing side, we managed to beat them three times last year, but that counts for nothing now. Unless they feel we've got a bit of an Indian Sign over them, but that's for them to deal with that and not for us to get complacent.
"We'll definitely be going across there in a positive frame of mind."
Glenn feels that the challenge presented by Fulham will be different from others the team has encountered in the season so far.