AC Milan is very difficult to qualify for the UCL, I am also pessimistic to hope that they can qualify. For Serie A, it will be a very tight competition, as Inter and Atalanta have rediscovered their form with the positive results they got in the last few matches, Milan must be careful about this. There is still half a season, Milan must focus, the transfer market will be very decisive. Hopefully Milan don't make a mistake so that they get more stronger to keep the chances for the Champions this season.
I also feel pessimistic to see AC Milan qualify for the round of 16 this season. Although the opportunity is still not completely lost for AC Milan, but for sure Liverpool will be the toughest opponent to beat. It took a miracle to see them off the hook. I think Atletico Madrid have a bigger chance of qualifying than AC Milan and Porto, it must have been an unpleasant start for Milan, but I just want them not to give up until the end.
I don't think Chelsea need to worry about the quality of their two goalkeepers. Chelsea's defeat of West Ham is common in football matches. Every goalkeeper at international level must have made mistakes so keep the spirit for the Chelsea goalkeeper.