Peterson played in 15 games for Maine last season. He averaged 20 points, 6.9 rebounds and 6 assists, shooting 40.4% from 3-point range and 44.2% from the field. The 6-foot-9 forward also suited up in 25 contests for the Celtics, where he shot 39.4% from the 3-point line. However, Peterson has now made the decision to move on from Boston.