AC Milan midfielder Sulley Muntari says they are highly aware of the threat posed by Barcelona as they clash in a UEFA Champions League group game at the San Siro.

The former champions will meet for the third year in a row in the tournament.

The Ghana international, who got the match opener last season in their 2-0 first leg win at the same venue in their round of 16 tie, is expecting a cagey contest.

"Barcelona is one of the top teams in the world which I will always say it, they have amazing players and you can't play them without concentration because they will bury you,'' said Muntari.

"We are AC Milan too, we have a top team with amazing players and if you want to win competitions like this you have to beat the best.

"Barcelona is the best so we have to play well and win because we want to qualify from the group and go forward".