Arsenal drew 2-2 with Bayern Munich in a dramatic first leg of their Champions League quarter-final tie, but the game could have ended very differently. Strikes from Bukayo Saka and Leandro Trossard spared Arsenal’s blushes after they gifted Serge Gnabry and Harry Kane goals, with the former Arsenal and Tottenham Hotspur players both netting on their returns to North London. Mikel Arteta’s side were frustrating at times, but they may now feel that they could have taken a lead to the Allianz Arena for the second leg in Munich next week, given that they arguably should have been awarded a penalt…