I think that the NBA should be careful in the next say, 15 years how they approach all salaries, rookie or superstar especially. The reason being, at some point the Chinese market will be mature enough to pay more for talent. If the NBA isn't careful in how they structure deals, they could be giving players incentive to make the jump.
Fortunately, the US still has a near-monopoly on NBA talent and it's still a tough decision for any player to go to a new country. However, money talks and there's going to be a class of basketball player that feels underserved and those would be the prime candidates. It could be a young player who thinks the rookie deal is way too low and/or he doesn't want to go to the crappy team that drafted him. It could be a superstar on a max deal taking some billionaire's crazy offer. Or, it could be the middle class player who could be paid like a star in a different league.
Currently the CBA (Chinese Basketball Association) only allows two foreign players because they want to develop their own country's talent. At some point they will raise that number and, along with the improvement of China's own players and the infusion of more foreign talent the quality of play will increase (it's unwatchable currently). OK, maybe the next 20 years.