Arsenal boss Arsene Wenger is confident his side can score the three needed goals with no reply to advance to the next stage of the Champions League.
The Gunners will face Monaco after the disappointing performance at the Emirates which saw Leonardo Jardim's win by 3-1.
And the Frenchman says Arsenal need to get back to their basics in their attempt to recover the deficit.
"We are in a position where today Monaco are favourites, but they can still lose it," Wenger told Arsenal's official website.
"We can go there and create something special. I believe that we will have the desire to do it and give absolutely everything to do it.
"I think we wanted too much to make a difference in the first game and forgot our basics. That means to defend well and attack well. We just focused on attacking well.
"[We need to] do what we did [against West Ham United], go until the last second, be patient and play a quality game.
"We need to focus on the quality of what we want to do and try to do it together."
