AC Milan boss Massimiliano Allegri has vowed his team will not make the same mistakes as last season against Tottenham when Arsenal come to the San Siro in the Champions League on Wednesday night.
The Rossoneri went out at this stage of the competition 12 months ago when a late Peter Crouch strike handed Spurs a 1-0 lead to defend back at White Hart Lane, which they did to progress with a goalless draw.
Allegri knows Wednesday's match up will be another stern test, and said: "Technically we have to play well and know that there are certain errors [from last season against Tottenham] which ultimately should not be repeated."
He added: "Last year we made one mistake late against Tottenham, tomorrow we have great patience and careful, otherwise you complicate everything.
"In the second match against Tottenham, we deserved to win and go through."
Allegri warned his men against switching off again.
He continued: "We must make a lot of attention, especially in defence, but not just for this one game, it must be over 180 minutes.
"We need to have a game of great intensity, and we can't give them chances to counterattack because that is their strength.
"Arsenal are playing very well lately and are very dangerous in attack. And one of Arsenal's best qualities is their speed, especially if they have room enough.
"Robin van Persie and [Thierry] Henry are very dangerous players, so we have to be aware of them, but it is the team of Arsenal as a whole that is the most dangerous."