Next season is a make-or-break year for Jared Sullinger and the Boston Celtics. The power forward will enter restricted free agency next summer, and if he can't keep his weight down there's a good chance the Celtics will cut ties.

Their frontcourt is suddenly stacked, and paying Sullinger big money may not be a smart move. On the other hand, if he establishes a reliable three-point shot, stays in shape/healthy and reaches his potential, there's a great chance the Celtics will keep Sullinger around.

His trainer, John Lucas, is banking on the latter scenario.

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Sullinger averaged 13.3 points and 7.6 rebounds last season, but came under fire for his poor conditioning. General manager Danny Ainge called him out publicly and signed a few players this summer who duplicate Sullinger's skill set.

The writing appears to be on the wall, but Sullinger has an entire season to turn things around.