Complex sentence: On September 29,2014, the Boston celtics signed Frazier to a non-guaranteed, training camp deal with the likely notion of auditioning with the Maine Red Claws in the future.
Split into simpler sentences: On September 29,2014, Frazier signed a non-guaranteed, training camp deal with the Boston Celtics. It was believed that he would audition with the Maine Red Claws in the future.