The Houston Rockets will make an all-out push to sign LeBron James, according to sources.

James is expected to opt out and one rival executive gives him a 40 percent chance of leaving the Miami Heat.

If the Rockets are unable to strike a deal with James, they will turn their full attention to Carmelo Anthony, while Chris Bosh is another option.

The Rockets have a promising guard-center tandem in James Harden and Dwight Howard, along with solid role players such as Chandler Parsons, Patrick Beverley and Terrence Jones.

Texas also has no state income tax, which gives the Rockets an advantage over some teams in terms of the player's financial package.

Sources say the Rockets are confident they can create cap space by trading away Omer Asik and Jeremy Lin without taking back salary in return.