I can say that Arsenal will win other matches, but in the case of Sevilla I am not sure, they are quite a strong opponent, despite the fact that they will play their last match before the Champions League against Real Madrid. I'm sure they will be able to give their best in both matches and do it successfully
Arsenal and Sevilla are competitive this season, they are favorites to qualify from the Champions league group B because they're fierce in performance and have the necessary qualities to explore in games. Perhaps Arsenal currently second with 3 points while Sevilla have 2 points, the team topping is Lens with 4 points rank, though the resulrs is shocking. This is UCL and there's alot of things that need to comprehended when it comes to UCL games, no room to underrated any team, results doesn't go according to plans, rather it moves to were it feels is suited.
If Arsenal has three points and Sevilla has just two and Arsenal is at the second position in the group, I don't think arsenal will be ready to drop any point and go down below Sevilla in the group and they will aswell want to be ahead of lens so if they win this game they will be six points and lens will be seven points if they win aswell.
So Arsenal will Rather fight for a draw than loose because if they draw they will be on four points and still remain second position in the group which will still be considered fair for them and keep them hopeful to make it pass the group stage, this is UCL and only the best is what teams give out and so I'm very sure if arsenal should be giving only but their best then Sevilla doesn't stand a place then because Arsenals best is way beyond Sevilla's best.