Arsenal defender Thomas Vermaelen says they must be ready to scrap in tonight's Champions League qualifier against Celtic.

"There will be a big atmosphere in Glasgow and we will need to play like we did against Everton," said Vermaelen, who signed from Ajax this summer.

"We will have to play physically, as well as trying to impose our own game.

"Celtic have good players in attack and there are some big, physical players. The game against Everton was not easy at all. It was a physical match and there was a new kind of style for me.

"In Holland, teams tend to play more football, just like we do at Arsenal. The Everton game was more physical but every player in the team coped with it well."