The potential stars I see are Mudiay, Johnson, and Turner and I'll tell you why:
(1) Mudiay: Elite size and strength at the PG position combined with good ball skills and court vision. He can get into the paint whenever he wants (though he currently has some trouble finishing when he gets there) and he does a good job of delivering the ball to his teammates when they're open. He's also quicker with the ball than you'd expect for a guy his size and makes good decisions in the open court. With the PG position trending bigger and more athletic, he's ready to match up against the leaders at his position and I think his shooting issues are correctable. Playing a year in China didn't get him a lot of pre-draft exposure, but it did prepare him for the experience of playing professionally better than any college program would have. It's difficult for me to imagine a scenario where he's not at least a solid NBA starter. With DeMarcus in the post and Rudy on the wing, defenses won't be able to key on him which means he'll have plenty of space to work with and he can slowly build the scoring aspects of his game without pressure to be a #1 option.
(2) Johnson: It was disappointing that he measured about 2 inches shorter than expected, it puts him on the small side for SF which is his more natural position but this is where I remember that size is just one small piece of the overall puzzle. He does have a 7 foot wingspan, very good lateral quickness, and above average strength. The biggest reason I'm hoping we draft Johnson is that I watch him play and he already has NBA moves. He gets to the basket with hesitation dribbles or creates step back jumpers, he boxes out and creates second chance points, his spot up jumper looks really good to me and improved throughout the course of the year. For a first year player, he already does a great job of drawing contact and getting to the line. His awareness as a defender is superb. I often saw him run halfway across the court to make plays that lesser defenders wouldn't even think to make. All of these areas need refinement, but the foundation is there for a complete wing player. And if he continues to add muscle to his already well developed frame, all of the skills I mentioned become that much more dangerous. Basically, I think he's Jimmy Butler with a stronger frame and better off ball defense. That's a player I find a spot for on my team.
(3) Turner: He didn't have a great year at Texas, but he has everything you want in a big man prospect. Size? He's 6'11" with an enormous 9'4" standing reach. Ball skills? He can both handle the ball and shoot the jumper well enough to be a threat on pick and rolls. He can spot up for corner threes. In the post he's got a hook shot and a turnaround jumper that he didn't showcase much in college, but if you go back to AAU and HS all star games, those skills are there. What he'll need to work on is footwork and counter moves, but who better to learn those from than DeMarcus? Defensively he's got length and timing which is all you need to block shots, which he did this year as well as anyone in college BB. He often takes himself out of plays though with poor positioning which is something I'd hope George Karl's staff can help him with. Everyone knows Towns and Okafor have star potential. I don't think Turner is that far behind them. He looks a little lost at times on the court but he's a smart, articulate kid and I think he's coachable. And of course you can't teach size.
There are other players I like, but this is my wishlist at #6 barring some kind of miraculous Karl Towns or D'Angelo Russell freefall.