By Ewan Murray Arsenal could only manage a 2-2 draw with Bayern Munich during their Champions League quarter-final first leg at the Emirates on Tuesday night. A lively first half in north London saw Bayern take a surprise lead into the break, with Serge Gnabry’s strike and Harry Kane’s penalty cancelling out Bukayo Saka’s excellent opener. Leandro Trossard proved Arsenal’s saviour from the bench in the second half, hammering home a vital equaliser as a thrilling affair ended all square. How the game unfoldedArsenal’s players were met by a cacophonous noise as they walked out at the Emirates an…