#2 Marseille

1992/93 Champions League title winners, Marseille, started well in the French league sitting 3rd behind PSG and Monaco. They are a side with lot of European Experience. Though they started the Europa league group stage with a win and a defeat, they cannot be counted out because of their success in Europe.
Florian Thauvin was an instant success after his transfer to Marseille this transfer window. With their strikers Ocampos and N'Jie scoring freely, Marseille will feel the time is right for a big push to play Champions League next year even if they miss out on qualifying from Ligue One.
Marseille played Arsenal 4 times in the past and twice came close to beating them. Trip to Orange Velodrome may not not be an extremely hard one for Arsenal, but it could still provide a stern test.