Here is an example from SI from November that talks about him as a sleeper. It's basically an article filled with hedging saying that he "could" be a one-and-done.

Nickeil Alexander-Walker probably won’t hear his name called earlier than Dell Curry on draft night, and he can’t effortlessly stroke 28-footers like Dell's son Steph, but he could be one of the best backcourt prospects in a draft class light on them.