From the end of the Invincibles and the post-Wenger wilderness years to the steady rise under Mikel ArtetaThe Invincibles were slain in Manchester on Sunday 24 October 2004, when Arsenal’s record 49-match unbeaten run ended in a traumatic, wildly controversial defeat at Old Trafford. It took a month for Arsenal to process their grief and rage; by the time they did, José Mourinho’s remorseless Chelsea had zoomed past