The Arsenal legend is impressed with how Vermes has drilled his players.
"They go forward together, they defend together. They put their body on the line or they're blocking shots. They're very aggressive in a good way and have a good attitude. You have to give a lot of credit to their boss; he's been doing a tremendous job for more than one-and-a-half years,'' said Henry.
"When I arrived here they were struggling, and for nearly two years now they've been playing (well); their record is impressive. You have to give them credit.
"They're just well, well-organized. I think that will be the word I would use. As I said you can see their boss is putting them in the right shape every time and the right tactics to help them.''