I'm sure Arsenal will win in this match, Chelsea is a bad team and can't compete against top teams.
Chelsea previous matches: they beat Brighton which currently in bad performance too, Fulham and Burnley (two mediocre teams).
Arsenal previous matches: they beat Manchester City aka toughest team, unlucky lose against Lens (but Chelsea is worse than Lens).
So it's obvious Arsenal will win, the odds is high too, don't miss to bet Arsenal to win @2.15.
Football is not what we expect given the caliber of these clubs. There are some truly unbelievable elements in football. You sound so confident that Arsenal will bring down Chelsea, but I am skeptical about that because a great deal of occurrences in football and ever turn out the way we football lovers desire them to be. Although there are not numerous concerns and sights on Chelsea this season, I'm just highlighting the important details, everyone focusing on Manchester City, Tottenham Hotspur, Arsenal and Liverpool to be in the race to compete for EPL title.