Schalke should advance their group, maybe even win it. Arsenal sure is the stronges opponent.
Dortmund: I guess they will go out as 4th of their group. Maybe they can get a few points against City at home and against Ajax, but other than that, I don't see how they could advance.
Bayern: Everything else than a group win would be a disappointment. Valencia is the strongest opponent, but come on... USUALLY they are no match for Bayern. But USUALLY they shouldn't lose against teams like Borisov, but I have the strange feeling that they will do just that...
Celtic: They will finish last of their group. They SHOULD win against Moscow, but I'm afraid, they won't.