Assistant boss Chris Hughton said: "We haven't been overawed in recent visits to Arsenal because we haven't allowed them to have a numerical advantage in any area."
"They have changed their system this season to similar to what they did in European games last season with a five-man midfield, Van Persie the link from midfield to the forwards."
"They've changed personnel in midfield with Gilberto, Fabregas, a wonderful passer of the ball, Hleb, who can play on either flank, Rosicky, lots of options in there."
"Henry has become very much entrenched in their system. He's most certainly been our most difficult opponent over the last few years and it gave us a lift when he didn't start last season."
"They haven't enjoyed their normal results at home, teams have gone there and made it uncomfortable for them and that's another thing that's given us added confidence."
Source: TottenhamHotspur.com