By Grey Whitebloom Arsenal slumped to a 2-0 defeat at home to Liverpool on Sunday evening, bowing out of the FA Cup in the third round thanks chiefly to their wastefulness in front of goal. The Gunners spent the opening 80 minutes creatively failing to find the back of Liverpool’s net before picking out their own goal. The luckless Jakub Kiwior inadvertently diverted Trent Alexander-Arnold’s sharp set piece past Aaron Ramsdale with just ten minutes left to play. Luis Diaz consigned Arsenal to a third consecutive defeat in the fifth minute of stoppage time, demonstrating the cutting edge that h…