The Miami Heat's immediate focus remains overcoming a 2-1 NBA Finals deficit to the San Antonio Spurs, but discussions have begun within the organization about trying to grow their so-called Big Three into a Big Four, according to sources close to the situation.

Sources told ESPN.com that Heat officials and the team's leading players have already started to explore their options for creating sufficient financial flexibility to make an ambitious run at adding New York Knicks scoring machine Carmelo Anthony this summer in free agency.

The mere concept would require the star trio of LeBron James, Dwyane Wade and Chris Bosh to all opt out of their current contracts by the end of the month and likely take further salary reductions in new deals that start next season to give Miami the ability to offer Anthony a representative first-year salary. The Heat also are prevented from making any formal contact with Anthony until July 1 and can do so then only if he opts out of the final year of his current contract. Anthony has until June 23 to notify the Knicks of his intentions, according to sources.

But the success of the Heat's 2010 free-agent bonanza has established them as the NBA's undisputed destination franchise, with owner Micky Arison empowering big-thinking team president Pat Riley to attempt to pull off another coup in the market despite new collective bargaining agreement rules aimed at preventing it.