Per the Boston Herald:
This summer, the Celtics were hoping to expand their coaching team by hiring an assistant coach with NBA experience. They discovered one just a few days into the off-season.
Sam Cassell, a member of the 2008 Celtics championship squad, will work as an assistant coach for Joe Mazzulla in Boston, according to a story published on Sunday by The Athletic.
Cassell, a three-time champion and 15-year veteran point guard in the NBA, has worked as an assistant coach for the past 14 years, the last nine of which he spent working for Doc Rivers in Philadelphia and Los Angeles.
