yu ming have 5 more years contact with rockets, after the contact depend which team pay most $$$$ for him. east coast have a lot of bad team, like new york knicks four years no payoff , portland , seattle etc
since nba is a billion dollar business. it is hard to do same as soccer team system.
all the new team before join n.b.a, they have to pay 200-400 millions fee in order get to the n.b.a