If you're trying to make an argument for what's essentially club vs country (basketball version), then I guess it's a valid argument, but if you're simply worrying about him randomly getting hurt, then you're nuts. He could contract Lassa fever in Brasil. He could get hit by a bus. He could decide he wants to sell his possessions and live in Tibet, and those would all be as random as him getting hurt playing 17 minutes a game for the US this summer. If your point is about his contractual value to the Bulls, then one could make the counter argument that you'd rather he go through the "trusting your nee" part of rehab with the national team as opposed to on your dime, during games for your club.