Mikel Arteta must get his Arsenal team selection right for tonight’s Champions League showdown against Bayern Munich. Arsenal face a tough test up against Bayern Munich at the Allianz Arena on Wednesday night. The Gunners need to find a way to win this second-leg encounter of their Champions League quarter-final clash with the German giants. With the aggregate score level at 2-2 after the first-leg, only a win will do for either side. To get the victory they crave, though, Mikel Arteta’s side must be far more efficient in the final third than they were against Aston Villa on Sunday. The North …