Those in the boardroom at Arsenal surely have a lot to say about Wednesday’s UEFA Champions League exit. The Gunners seemed a little overawed by the magnitude of the occasion, especially Bukayo Saka – who delivered an uncharacteristically poor performance inside the Allianz Arena. It was – in fairness – the England international’s first taste of the UEFA Champions League this season, while it was also Mikel Arteta‘s first UEFA Champions League campaign in charge of Arsenal. A lot of people at Arsenal are almost learning on the job in terms of playing fixtures of this importance, while the squa…