Episode 21 of 'That Sums It All Up' sees Johnny Rosen and I discuss Arsenal's 3-1 over West Brom in the Premier League before casting our eyes back over the painful exit to Unai Emery's Villareal in the semi finals of the Europa League.We discuss what we felt went wrong over the two legs of the tie, where Mikel Arteta's mistakes were made & how this was perhaps to be expected given the consistent underperformance of the team, especially in an attacking sense.We then move onto the bigger questions, assessing Mikel Arteta's future, where the club goes next in terms of recruitment, player sales & resetting of expectations. And, most importantly, who is responsible and whether they are the right people for the job.Enjoy!My Twitter: https://twitter.com/alfiesteiner1Johnny's Twitter: https://twitter.com/johnnyrosen1