Nice player.
I would do the following:
1. Get rebounding to strong.
2. Train one on one until Driving and Handling are both on Proficient.
3. Train Jump Shot until Jump Shot is on Prominent.
4. Train passing up to mediocre.
5. Train free throws up to pitiful.
6. Train IS, ID, and Rebounding until they are all on prominent.
Thanks alot for the advice Naker! I was pretty lucky my player started out with respectable and average handling and driving respectively. Sucks that it wasn't the same with my other trainees. I may probably switch the orders in what you suggest for me. I think I'll swtich #6 on the list to #2 so that I could hopefully be on top of my league next season and increase value for two of my other 19 year old trainees which I plan to sell at the beginning of next season.
Right now, I'm planning to stay in my division, and try to improve my players and buy some useful guards before thinking of promoting. Though I'm proud to say I was able to push the number one team in my league to a close fight in my last league game, and in his home floor no less, where he has crushed teams with an average of around 40 points. Hopefully next season I'll be the one on that position. >:D