After missing the Celtics’ first eight games of the season due to knee soreness, Marcus Morris is reportedly slated to miss another string of games for the same reason. According to The Vertical’s Shams Charania, Morris will be sidelined for an indefinite period of time because his left knee has continued to nag him since returning to the court at the beginning of November. The 6-foot-9 forward has played in 16 games this season, averaging 12.1 points and 5.5 rebounds.