The chances of AC milan are quite slim to be able to accompany PSG to qualify for the next round. Because Ac milan will not be able to change their fate in the second leg because they tend to look weak with their current condition. I think Ac milan will probably fight to rank 3rd and play in the European league this season. PSG and Newcastle united have the opportunity to qualify for the next round, of course they will take advantage of it in the second leg match.
To reach the final this season, of course no one knows who will be able to achieve it. However, for now it is true that the strongest candidates are still owned by 4 team such as Inter milan, Bayern munich, Real madrid and Manchester city. If there are no big surprise from other team, it is possible that these four team can go further in the Champions League this season.
In my opinion, Dortmund and Newcastle, who are competing for second place, are still wide open. I know that Newcastle is currently much more stable and very superior, but I still have a little hope that in the 2nd leg against PSG it will be quite fierce compared to Dortmund's match against AC Milan.
Bayern Munich, Arsenal, Madrid, Inter, Man City, PSG and Barcelona all remain the strongest possible choices that we will continue to look at after the preliminaries. Even the presence of Barcelona, provided that Lewandowski and De Jong recover quickly, might be more promising to perform optimally in the UCL.
Everything is pretty much easy for Bayern Munich and they can be easily thinking about the next games after the staging group because this team is in a group with weak teams.
But regarding Dortmund and Newcastle I think Dortmund can have more chance and Newcastle is not stable enough to say they can be in the next stage of the Champions League.