By Katie Catherall Arsenal were unable to learn from the mistakes they made in the first leg against Bayern Munich and were forced to bow out of theis season’s European campaign early after ultimately falling to defeat against the Bundesliga side. This was just the seventh time in history that the Gunners had reached a European Cup/Champions League quarter-final and the first since 2009/10. Under Mikel Arteta, fans had begun to believe that this would finally be the year that Arsenal could win the Champions League. They came closest in 2006, losing to a late Barcelona comeback in the final fol…