I'm gonna go with Skal as well. Lack of competition in his last year of high school is gonna contribute to a slow start, but as others have stated already that'll be good for him and the team. Come March I think he's gonna be impressive as Towns was at the end of the year.
I would say Charles Matthews is second, where he will improve his decision making, and I think he'll improve as a defender as the year goes on. I absolutely have bought into the DeAndre Liggins comparisons. He's a tough kid, and I can tell Cal absolutely loves his hustle.