Arsene Wenger believes the Gunners have no option but to 'go for it' in their final Champions League group match against Olympiakos on Wednesday night.

The Gunners need to secure a two-goal victory over the Greek outfit to secure their passage to the knockout stages of the tournament, or win by a one-goal margin and score at least three times.

"I want to win and I want to qualify. For me our job is to win the next game, and do what is requested," Wenger said.

"There is one positive thing for us - we know exactly what we have to do. We know that we have to go for it from the start. So let's do that and hopefully we can get through. We know what is expected and we have studied Olympiacos.

"We changed the team completely [against Sunderland] because we've lost the core in midfield of Santi Cazorla and Francis Coquelin in the past two weeks, and we had to find a new balance. We were a bit insecure as well because we had not won last week. I believe [Olympiacos] is a different game psychologically, it's clear, we just have to go for it."