The Athletic reporter Shams Charania reported that multiple sources revealed that Garrison Matthews signed a one-year unsecured contract with the Celtics.
Matthews is a quality shooter guard who played for the Wizards for the first two years of his career, playing in 64 games last season, averaging 5.5 points, 1.4 rebounds in 16.2 minutes and shooting 38.4% from three-point range.