Why not wizards along with Rui Hachimura?
Could be a great storyline and duo.
If it doesnt work due to draft picks then how about him going to Gonzaga with Rui in college?
Oc - not really an Oc but agon Kongo from eye shield 21 ,you could just transfer his skills to basketball he could be a slasher, or 3 and d threat with a super fast release and fast reflexes on defense