By ESPNSTAR.com staff
Milan are currently second in Group C, one point ahead of Anderlecht and the Rossoneri could secure qualification into the knockout stages of the Champions League if they beat their Belgian opposition and Zenit St Petersburg fail to pick up a win against Malaga in the other group fixture.
The Rossoneri may have struggled in recent times but they are still considered favourites to progress in the competition and with the likes of Stephan El Shaarawy within their ranks, Milan are expected to easily pick up all three points against Anderlecht.
However, Mexes has moved to play down expectations and warned that Les Mauves et Blancs had the potential to upset the Rossoneri.
"This is a very tough game and a decisive one, so we have prepared for it as best we can," Mexes was quoted as saying by the official Milan website.
"It is a Champions League match and we'll do everything to win, though it is a fixture rich with hidden dangers.
"We will try to keep a clean sheet and hurt our opponents in attack."
Mexes can at least take heart from Milan's performance on Saturday which saw his side fight back from 2-0 down to draw 2-2 away to Napoli.
"We showed a great reaction in Naples and that gave us a lot of confidence," Mexes added.
"We need points in Serie A, but have proved we've got strength and do not deserve to be in that position.
"The Champions League is a different tournament entirely and we are in a very balanced group.
"Anderlecht have shown they've got quality, but we will all fight together to get through to the next round.
"Things are not going the way they should.
"We lacked some good fortune, but also make individual mistakes.
"The only way out of this is to stay united and work together in the same direction."
Anderlecht has already taken points of Milan when the two sides played out to a goalless draw in San Siro in the opening game of the group.