Chelsea have been the biggest spenders in the Premier League and across Europe. They've spent more than entire leagues combined and have an entire XI of attackers on their books but the business is still not done this month.
Such is Todd Boehly's eagerness to catch up on lost time from last summer and make rapid inroads into developing the squad he inherited into one more akin to his style of ownership, Chelsea are on a fast-track squad rebuild. As Jurgen Klopp has already pointed out though, this spending is not sustainable.
The point is that it doesn't have to be. This is very much the emergency surgery part of the plan, what follows will be more centred around efficiency. However, even with the intent to overhaul an entire squad the Blues are only willing to go so far.