If you trained just inside skills from this point on (IS,REB, and ID) he would make a kick ass PF when he is 24. Maybe look something like this:
Jump Shot: prominent Jump Range: respectable
Outside Def.: prolific Handling: sensational
Driving: prolific Passing: proficient
Inside Shot: tremendous Inside Def.: tremendous
Rebounding: sensational Shot Blocking: strong
Stamina: strong Free Throw: proficient
This would put him at about 45k and 85-92% done with training. Then you could shape him some more based on how inside/outside oriented you want him to be. Anyways that is what I would do. He will also train VERY quickly for all those inside skills being 7'0". You must have had a ton of patience with this guy's OD and passing training, but he looks amazing now. He is very strangely shaped for his size, but would make an incredibly well rounded PF if you took this route.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs