Versatility is all very well and tactical flexibility is a brilliant skill to have and option to use, but unless it's built on the foundations of something solid, Chelsea will keep putting themselves in tough situations.
No, they weren't meant to foresee Reece James' injury against AC Milan, but the warning signs have been there for two summers, and if last seasons struggles without James and Chilwell weren't reason enough, more fool them.
Thomas Tuchel went into the campaign well stocked on paper, but the fragility of the depth wasn't truly explored or addressed and it cost Chelsea a true title challenge, or at least a more sustained period at the top.
