Group F is certainly the most interesting in this Champions League group stage match. Almost all of them actually have the potential to qualify. Milan is showing good performance in the Ligue 1 they are not performing well in the Champions League competition. Who knows, maybe they will be able to improve their performance in the Champions League, it is really uncertain which teams are actually going to qualify. The only team that I am confident about qualifying is actually PSG and trust me I really hate saying this.
there is a slight mistake in your writing that Milan is not in League 1 but in Series A. 
the best candidate might mostly say PSG because currently PSG is leading group F but if you always watch UCL matches when group F competes you will definitely say Newcastle or Dortmund are also still worthy of qualifying from this round because almost all the teams in group F have performance which is pretty good except Milan are without a win since the preliminary round started. you can also see how PSG was completely beaten by Newcastle but after that Newcastle was beaten by Dortmund after that Dortmund was beaten by PSG, very interesting? yes, of course, because it is too early to determine who will qualify from Group F because there are still several matches remaining while these three teams are still a very competitive competition.
Every team in Group F has a chance to qualify for the knockout rounds. After Newcastle's big win against PSG we thought Newcastle might be at the top of the points table. But in the next match, Newcastle lost against Dortmund. Newcastle lost by a narrow margin of 1-0. And now Newcastle are third in the table after this defeat. On the other hand, Milan team is at the bottom of the table but this team is strong. If they do well in the next three matches, Milan also have the potential to qualify for the knockout rounds. I'd say we'll have to wait until the last match of the group stage to know which two teams from Group F will play in the knockout rounds.
It's hard to predict it. PSG is also able to go down again if it will not be winning the upcoming game. Acmilan is the only club that struggle to win a game. I dunno how long acmilan will be trapped into the same thing. Pioli needs to create a new strategy to help acmilan in getting three points.
There are some matches remaining at this moment and it's likely we will be seeing some changes to happen in the ac milan. Milan got draw against napoli which has proven that if the club is not yet in a good shape.
Napoli placed at the bottom of acmilan right now. It will be a shame if acmilan will not be able to go to the UCL knock out stage. Im stillw aiting for something new to come from acmilan. Pioli can't always rely upon its old strategy.
Giroud is the only one who is really hardworking to win the game. The rest of players are nothing compred with him.
Group F was the hardest group even after the Champions League started, I think the chance for PSG is higher compared to the other teams because of the results they got so far and we know PSG got sic points so far while Dortmund and Newcastle got the situation and I think Dortmund can be the second team of this group in the end but Milan is unstable and they have good performance some times which can make them dangerous.