Watching his highlights, he has a bit of a Paul Millsap and Richard Hendrix kind of a game, albeit a couple inches shorter than either guy. His ability to rebound and clean up around the basket is what we missed this season and should be a welcomed addition, next year.
As for his effect of Walker, he clearly will take some minutes from him, but that may not be the worst thing for the team. I'd bet Walker, despite adding some good muscle weight since arriving at Hargrave, won't be ready to play 20+ mpg at the 4 spot as a freshman. He is also versatile enough to play the 3 if we elect to go with a bigger lineup, at times. This could push Nkamhoua toward a potential redshirt or possibly a transfer because I see no path for him towards meaningful minutes next season without massive improvement this summer, and he is currently being penalized by not receiving 1-on-1 instruction and drill work with the coaches because of the Covid-19 scare.