Photo: Michael Dwyer/AP

According to Steve Bulpett, the Boston Celtics big man Al Horford is no longer discussing a three-year contract with the Celtics and will leave the team in free agency this offseason.

Last season, the 33-year-old averaged 13.6 points, 4.2 assists and 6.7 rebounds per game, while shooting at 53.5 percent from the field.