Miller was waived Tuesday by the Heat as part of a financial move that will save them as much as $17 million on luxury-tax payments next season. They still owe him $12.8 million over the next two seasons.
Several teams are believed to be interested in Miller, who wants to sign with a contender, sources said. The Oklahoma City Thunder, San Antonio Spurs, Houston Rockets and Memphis Grizzlies are among those expected to chase his services.
Miller averaged 4.8 points and shot 42 percent from 3-point range during the regular season for Miami. He played a big role for the Heat in the NBA Finals, shooting 61 percent from 3-point range and starting the last four games.
Shortly after rumors surfaced Wednesday night that the Cleveland Cavaliers were interested in claiming Miller off waivers, reports of the veteran forward needing back surgery or considering retirement arose. Miller dealt with bulging disks in his back during the 2011-12 season, but he played in 59 games this past season, his most since 2008-09.
On Tuesday, Miller said he was feeling healthy and looking forward to next season.
"I'm excited about the next spot," Miller told the South Florida Sun-Sentinel. "I'm re-energized. I really am. I'm just feeling healthy. I'm ready to play. I started to get back in there again last week, and I can't wait to play again next year."