Mikel Arteta knows that his Arsenal side will need to swiftly return to winning ways when they welcome Luton Town to the Emirates on Wednesday. Arteta watched his team deliver an extremely resolute performance against Manchester City on the weekend, but it’s now time for the handbrake to come off. That point against Pep Guardiola’s side means very little if Arsenal aren’t able to back it up with a win against Luton. Rob Edwards’ team are certainly no pushovers, as Tottenham Hotspur found out on Saturday, but Arsenal know that nothing other than three points will be acceptable. And with that in…