I hope he is saving his money now, while he has the income. It is best for athletes to just save the money and live off interest the rest of their lives. When they start investing, starting businesses, they don’t do very well and lose it, with no way to make it back again.
Coach Krzyzewski had some great stories about Kobe’s work ethic; I heard him tell them more than once. Kobe’s life is around basketball - the change is going to hurt.
One big basketball star once told me that after her competitive life was over she felt empty. All her life people had been cheering for her and she continually won. Then, suddenly, nothing. Life in the stands instead of on the court.