What is he? The guard version of Draymond Green.
What does that mean? He is smart enough to attack defensive rotations, but probably not good enough offensively to create. He is a good enough passer to have the ball in his hands consistently, but not to be a full-time offense initiator. He is a good enough shooter to hit open threes, but not someone you would draw up plays for consistently (although his shooting form looks much better).
And he is a bull-dog defensively who, when he figures out how to avoid fouls while being physical, will be a nightmare for opponents. He can guard 1-4, draw offensive fouls, make big defensive plays, and wreak enough havoc to make opponents uncomfortable.
Ideally, he would be the 3rd or 4th option on a championship team.