Arsenal got advantage after winning over 1-2 from Sevilla and other match in Group B between Lens vs PSV Eindhoven have draw automatically The Gunner return top position standing with 6 points and remaining 1 points behind Lens on runner up position.
Arsenal dominated that match and created many opportunities. Two goals are even too less from all chances they created in the match. Two Gabriels scored two goals for them and in this season with good performances of Arsenal in both Premier League and Champions League, we can say that they already return to highest level not only in Premier League but also in Europe (Champions League).
I doubt with Sevilla chance qualifying to knock out round after collecting two points and have stuck on 3rd standings position. Will Sevilla habit on UEFA Europe League only in this season after their tradition always participants in Europe League trough third standings in Champion League group stage?
Sevilla escaped delegation in La Liga last season and won Europa League but their problems are still here and they began this season very bad in La Liga. They brought their bad performances to Champions League too and you raised a good question. I have same thinking that Sevilla will have to try to end this group in a third position and get another chance to play in Europa League where they are King.