Going to be honest, I think barring any big surprises the quality of sides dropping down to the Europa League will be very negotiable for the sides already in that with aims of winning it (IE Liverpool)
City and Arsenal will go through, United probably finish above Galatasaray and Copenhagen too. Newcastle's tougher but could end up anywhere, PSG probably top that group.
Sevilla will still manage to end up third in theirs!
That's my worry. Ordinarily they're better than PSV but they look weaker than they have done in their Europa League winning era right now. Lens aren't a bad team though either.