In my opinion, Group B is the most interesting one. It is like a group of death in the Europa League now. Brighton, Marseille and Ajax...
I'm really sorry for AEK Athens. Because they don't have much chance against any of these teams. They would probably end up at the bottom of the group. When it comes to which teams would qualify for next stage it is really not easy to predict. Because Brighton are a strong team as much as the others. Maybe they don't have a big experience in European competitions. But they are playing great in Roberto De Zerbi's management.
I think Brighton and Ajax will be the teams to qualify.