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With Dwyane Wade missing numerous games as he manages knee issues, the Miami Heat have started trade talks looking for backcourt help, multiple league sources told ESPN. Miami has a glut of big men, and center-forward Joel Anthony, who has played in just five games this season, is one player who may be available . . . The Houston Rockets are telling other teams they intend to trade disgruntled center Omer Asik between Dec. 15 and Dec. 19, sources familiar with the team’s plans told ESPN . . . Forward Alex Murphy, a redshirt sophomore from Wakefield, R.I. who played at St. Mark’s and South Kingstown (R.I.) High School, is transferring from Duke. His father, Jay, played at BC, and his brother, Erik, is a rookie with the Chicago Bulls.