The Oklahoma City Thunder and Miami Heat have emerged as frontrunners to sign forward Caron Butler, league sources told Yahoo Sports.

After securing a contract buyout from the Milwaukee Bucks on Thursday morning, Butler is expected to clear waivers and become a free agent.

San Antonio and Chicago are in pursuit and plan to make pitches for Butler too, league sources said.

The fact that Oklahoma City stopped pursuing Danny Granger has led many in the NBA to believe the Thunder are confident in their recruitment of Butler.

The Los Angeles Clippers are strong leaders to sign Granger, sources told Yahoo Sports.