Arsenal gifted Bayern Munich two goals in the first leg of their Champions League quarter-final tie, and had to settle for a draw at the Emirates Stadium. Despite taking the lead through Bukayo Saka early on, Arsenal found themselves 2-1 down at the break after errors led to an equaliser from Serge Gnabry and a penalty from Harry Kane. Mikel Arteta’s side found an equaliser through Leandro Trossard, after the Spaniard made some excellent substitutions, and they thought they could have had a penalty at the end when Saka went down in the box after colliding with goalkeeper Manuel Neuer. It was a…