The son of Chicago Bulls legend Ron Harper, Harper has played for the Toronto Raptors and Detroit Pistons over the first three seasons of his NBA career. His playing time has been limited, as he has only appeared in 11 games throughout that span, averaging 2.2 points a night, but he seems to have potential.

Williams joins Shulga and Luis Jr. as the two-way players for the Celtics for next season. Luis Jr. was acquired from the Utah Jazz last week officially in exchange for Georges Niang and two second-round picks. Boston currently only has one spot open on the 15-man roster.