It's unlikely, but my Dream Atemoya leaves look identical
Im hoping for atemoya. I already have two small cherimoya trees.
I planted 30-40 African pride atemoya seeds last year and I noticed some of the
plants had rounder more cherimoya leaves and some had more slender pointed
sugar apple leaves. None of them were as round as your leaves. Your leaves look like
cherimoya. They would be perfect root stock to graft a top tier atemoya or cherimoya
next Fall or better next Spring.