AC Milan have lost their first two Champions League matches. Milan lost against Leverkusen and Liverpool. However, Milan managed to win the last match at home against Club Brugge. However, Milan's overall performance is still very erratic. Milan will play against Madrid in the next Champions League match. Milan is likely to lose in this match as well.
I don't think Ac Milan should be a team Real Madrid will struggle in champions league. Ac Milan have not really done much in performance this season which we can that in the Italian league and champions.
We've seen clubs that didn't do well in their local league and neither started the UCL well but played the final of the UCL as they are not always a yardstick, clubs at times could have their downtimes as well, I fear for Madrid, the feat has not been impressive lately. You can imagine what Barcelona did to it recently, concealing a whole 4 to nill is not what anyone should be proud of for Real Madrid. But fine, it's a better side in this game and being at home is an advantage but notwithstanding no club should be undermined