Brooklyn Nets also bolstered with backcourt after adding Australian guard Patty Mills on a two-year, $12 million contract, his agent Steven Heumann said.
Dallas Mavericks added depth to its backcourt and frontline rotation by trading for three-point gunner JJ Redick and center Nicolo Melli from New Orleans Pelicans.
DeMarcus Cousins might be heading to South Beach after being released from the Los Angeles Lakers.
Australian Ben Simmons became the first rookie since 1980 with a triple double in an NBA playoff game, helping spark the Philadelphia 76ers over Miami 106-102 on Saturday.
The Cleveland Cavaliers and Golden State Warriors, vying to set up a fourth straight NBA Finals clash, continued to limp toward the post-season on Tuesday.
Darren Collison nailed a couple of clutch late three pointers as the Indiana Pacers clinched a postseason spot on Sunday with a 113-107 overtime win over the Miami Heat.
LeBron James scored 24 points and came up with a crucial late block as the Cleveland Cavaliers edged the Miami Heat 91-89 on Wednesday in a duel for third place in the NBA's Eastern Conference.
Goran Dragic's 25 points propelled Miami to a 97-79 victory over the Milwaukee Bucks on Sunday that pushed the Heat within one game of the Cleveland Cavaliers for third place in the NBA Eastern Conference.