Chelsea have abandoned a very basic principle of theirs. In the Abramovich era they always have two sitting DM’ers, especially against big clubs. For example Matic and Kante. Shielding the back 4 from these basic cut backs by Arsenal, tracking runners. Which still leaves 4 attack minded...
Two porous defences.
Chelsea leaving Arsenal CM’ers breaking into their box completely unmarked, time after time.
Arsenal’s defence as embarrasingly bad as it’s been for a decade.