Arsenal defender Ainsley Maitland-Niles has questioned Unai Emery's tactics following the Gunners' 2-2 draw against Watford.
With Emery's side opening their Europa League campaign away to Eintracht Frankfurt tonight, full-back Maitland-Niles has revealed what was said in the dressing room after Arsenal let a two-goal lead slip against the Hornets on Sunday.