Episode 19 of 'That Sums It All Up' with Johnny Rosen sees us discuss Arsenal's disappointing 1-1 draw at home to Slavia Prague in the first leg of their Europa League quarter final tie.We discuss the team's underperformance, inefficiency in attack & continued capacity to make mistakes at crucial moments.We discuss how wrong we felt Mikel Arteta was with his starting XI, as well as the continued weakness in (not) turning to the substitutes bench soon enough.We then turn to chat about Pierre-Emerick Aubameyang, and whether there is serious cause for concern given current performances, continued selection on the wing, discipline issues & curtailed involvement in recent weeks.Enjoy!My Twitter: https://twitter.com/alfiesteiner1Johnny's Twitter: https://twitter.com/johnnyrosen1