the overload is created by their rw being able to double up due to doyle then stading at lcb - ego the place where we have more players than them unless they are playing 3 strikers would be at cb as we would have 3 cb's then against 1 or 2 strikers
If we saw him as a 6 who played a HB role where he starts as a CDM and can step back to make it a 3 in possession allowing both fullbacks to stay high while offering a bit more cover at the back.
Could work, he has the pass range.
We don't even know we have approached Man City and you brought up his performances at Leicester last year so Ki was just explaining the differences in tactics and why a LCB was able to look okay at LB for them.