Manager Arsene Wenger believes Arsenal can cause a major upset at the Stade Louis II on Tuesday night.
The Gunners go into their Last 16 second-leg against Monaco trailing 3-1 and the Frenchman says his players will give everything to recover the deficit and qualify for the next round of the Champions League.
"If you have no belief, you have no chance," Wenger said.
"We have to believe that we can do it and give everything. This time Monaco are favourites so we have to go there, give absolutely everything and come out of the game with that feeling.
"I haven't decided yet [the line-up yet].
"You have to take that a little bit with perspective because the game [against West Ham] was more open, they were fresh when they [Danny Welbeck and Santi Cazorla] came on and they have the quality of course.
"I rested Cazorla today because he's basically played every single game since the start of the season.
"What is important is that the team plays well. I know that all these offensive players have the quality to deliver something special but for us it's important that the team plays well."
