My thoughts are that all of his offensive skills need work. I would train him in 1v1 for forwards and rebounding. I would say maybe a season's worth of 1v1 and enough reb to get it to prolific.
That will make him 25 and a half with probably two pops in JS, three in HA, three in DR, and a couple in REB. Then for his next two years you single position train him in passing and JR and you have a SF better than Toguchar.
Once I scored a basket that still makes me laugh.