Someone hand Todd Boehly some paper and a pen, notes need to be taken. Chelsea are being shown up on and off the pitch by Arsenal and it's not even got to the second summer window.
Whereas Mikel Arteta's men have spent largely smart, without much failure or risk, Chelsea's owners have been scattergun and without plan. These are clubs at different stages of their development, that is to be said, but it is nevertheless a stark reality check.
Not only did the Gunners beat their London rivals on the pitch twice this year, continuing a recent run of success at Stamford Bridge as well as banishing memories of Romelu Lukaku steamrolling them at the Emirates Stadium last September, they are proving to be business experts off it.