I don’t think he’s the right profile of signing for them at all personally and believe he is likely to be eaten alive in the PL, especially under Lampard’s stewardship where defenders are left exposed.
We were calamitous at the back defending set pieces, crosses and corners. Also looked generally disorganized. An older, highly experienced CB should certainly help those things.
He'll 100% need to have the right sort of personell around him, though. Zouma is our quickest and most mobile CB so I'm going to guess he'll be Silva's primary partner should we sign him.
Plus, Kante missed literally 50% of the last season. Having him healthy would help a 36 year old defender. I don't see any downsides to this move. Stopgap until buying Rice or Upamecano next summer.