The reason I think KO is going to put up really solid numbers is because he is going to draw big slow defenders at times up top on pick and pops. This will get him those KG jumpers from the top of the arc, which I think he can nail down decently.
When players jump out on him, I think he is cagey and will give a pump fake, one dribble and a quick pull up from just above the free throw line which seems to really be a good shot for him.
Those two shots should net him 6-12 pts every game.
If they guard him with a smaller big, he seals off his man extremely well and JC and JS should be able to get him some easy looks.
And he runs the floor and finishes EXTREMELY well, if a bit unorthodox. He uses a long jump to get away from defenders finishes by quickly getting the ball to the backboard. I don't think defenders see that kind of finish often and it seems to throw them off. I'd think he gets one or two buckets a game from transition.
His free throws seem to be falling now that the games are slowing down for him. Add all that up, and I could see him getting 14-20pts a game if Brooks and JC aren't just putting up shots all over the place.
Just being tall and active can net you 5rebs a game if you don't have a dominating rebounder on your team, which the C's don't have.
So if I had a guess, I'd say 15pts/4rebs/3asts/1stl per game guy. The assists could go up depending on how much they let him run the offense.