Aaron Gordon. He has had a big part to Arizonas success.
Vonleh is my 2nd option. If Embiid, Wiggins, Parker stay for the draft they will go 123. Then its likely Vonleh due to potential/upside. Or Exum if a team really likes him and needs a pg.
5th best available then is Gordon imo
Smart has really dropped down the list. His FG is horrid, bad shot selection, OKU has been losing alot recently and him pushing the fan doesn't help.