The Rockets have discussed Yao Ming with the Kings and Bobcats, according to Jonathan Feigen of the Houston Chronicle.
Adrian Wojnarowski of Yahoo! Sports reported on Monday afternoon that Houston was shopping the All-Star center.
Sacramento has the sort of young talent that Houston would seek as part of any deal, while Charlotte would likely have to include coveted draft picks in addition to players.
The Kings are against trading rookie DeMarcus Cousins, despite concerns about his character and the team's rough start.
Nothing is imminent, with a trade much more likely around February's deadline.