No one can deny that Arsenal have improved tremendously this season.
Last May, the players excitedly celebrated the "accomplishment" of scraping into fourth place, but after a very turbulent and contentious summer, Arsenal have surged to the top of the Premier League.
Four points separate the Gunners from the next-best team and they sit atop the group of death in the Champions League with one game left to play.
None of this would have been conceivable with recent Arsenal teams. Let's look at exactly what has contributed to—and detracted from—their success this campaign.