The two sides clash in Belgium with the hosts looking for their first win in Group D following a 3-0 defeat to Borussia Dortmund and a 1-1 draw in Turkey with Galatasaray.
Arsenal also lost against Dortmund, but responded with a 4-1 demolition of Galatasaray last time out at the Emirates Stadium.
"It's going to be a different game, not like with Dortmund," he said in a media conference on Tuesday.
"There was too much enthusiasm before the game with Dortmund and we lost 3-0. Now let's start again.
"Arsenal are very fast in the front with Alexis Sanchez and it is a very compact team.
"We have to stop Arsenal in the middle of the pitch. This will be crucial.
"I have admiration for [Arsenal boss Arsene] Wenger. He stayed many years with Arsenal and has shown many qualities and grown a lot of talented players."
