That net spend figure is warped with the sale of Ronaldo, which was not an everyday transfer, but a most extra-ordinary world record transfer.
This.
You spent 17 million on De Gea ffs
Yes, it is not an everyday transfer but you would think that most other clubs without the financial constraints would spend available money where needed. Especially a club that is (normally) competitive in a lot of different competitions which can put pressure on the squad. We could have done with at least one more first team midfielder this season.
Since 2005 Chelsea's net spend is 245mil, City's 426mil and Utd's is 58mil.