Bryant had a player option with Miami next season for $2.8 million but declined it to become a free agent.
Last offseason, the 26-year-old agreed to a two-year contract with the Heat for $5.37 million after winning an NBA championship with Denver.
His role with the Heat, however, was minimal. The 6-foot-10 Bryant played in just 38 regular-season games in Miami and two playoff games. In the regular season, he made four starts and averaged 5.7 points and 3.7 rebounds in 11.6 minutes per game.
Miami drafted Indiana center Kel’el Ware with the No.