The January signing from Malaga, who has impressed since moving to north London, has asked his team-mates to block out any criticism and focus only on the top four
The Gunners have lost just one of their last seven league matches, closing the gap on fourth-placed Tottenham, and also recorded a morale-boosting victory over Bayern Munich at the Allianz Arena.
Arsene Wenger’s side sit just four points behind their fierce north London rivals but have a game in hand, and Monreal is confident Arsenal have the quality to claim a Champions League berth.
"We still have matches left to fix the situation and to try to meet our objectives," the Spaniard told Arsenal Magazine ahead of the Gunners’ league match against Reading on Saturday.
"It is logical that people talk because the situation has not been as it should be, but the players and club in general have to ensure that doesn't affect us.
"We have to use our energy for the matches. If you are thinking of what people are saying, you are wasting that energy. You have to concentrate on the next match.
"Every fixture now is a final we have to win. That has to be our mentality. I am sure we will put it right."