In a back 3 maybe. but even then we have to compensate and have him play more advanced of the other cbs making us lopsided. But you don't sign a cb only for one formation. Surely at some point, we will switch to back 4 under tt oder another manager and you also don't play Azpi as cb in a back 4. Honestly I never liked Azpi as cb even in a back 3. I further don't think that Kounde is remotely as tough as Azpi.
Also, again, there are jsut so many quality, tall cbs available who cost half of what Kounde does. Maybe it is bc he scores a flashy goal every blue moon but he is so so overrated. Why do we pick the one tiny, overhyped cb? itdoes not make sense. Just sign Lacroix for 25-30m and be done with it. So many quality CBs like Konate, Varane already moved and we stood by so i thought maybe we just dont sign one this summer but no we go in for the one i explicitly never wanted. Just feels shit.