It would have be nice if Arsenal win and get Champion's League spot, that will only be possible if Tottenham Hotspur loses against Norwich FC. Those three losses in a row messed the season up for Arsenal, I think Arsenal should count their loss and look forward to Europa League, UEFA Champion's League is gone.
Arsenal may Missed the champions league spot next season due to their recent loss against Newcastle which they were defeated with 2 goals. Arsenal coach, Mikel Arteta would look forward to win the last game of the League, perhaps they could still qualify for the Champions League only if Tottenham loses their game. However, Anthonio Conte don't have a room for draw in their last game, they precisely need the win. If gunners failed to secure the champions league spot, they will settle for Europa League next season.