K.O worst case scenario is a versatile big off the bench. sort of like a Ryan Anderson, but a more all around game. But he can become more than this if he wan'ts too. Too early for me to give up on him.
Nothing I've seen from him has given me the impression that he won't be able to improve some of his flaws. He has a high skill set for a big and if he corrects some of the issues with hesitating, not taking enough shots, injury proneness, foul rate etc, than I see him as a solid starter at worst.