He rotates with those three just as a Richarlison would if we signed him. The only difference is that as part of the rotation you tweak your formation.
I have to assume some of you haven't watched much Lautaro. This would be nearly a Haaland-level signing, their numbers are pretty similar over the last few years. Signing Lautaro put us in the title conversation. You win titles and European trophies with elite goalscoring and we'd have that as much as anyone in the world with Kane, Son, Lautaro, and Kulusevski.