Roy Rogers, who was hired as an assistant coach last season after the Celtics let go of Clifford Ray, will not return to Boston’s bench next season (whenever that begins, and, um, if it begins). (Boston Herald)

The contracts for all of Doc Rivers’ assistant coaches expired on June 30, but only one has been told to find another job. Two league sources confirmed that Roy Rogers, who replaced Clifford Ray as big man coach last season, will not return.

The reason had nothing to do with Rogers’ ability. He is still considered one of the league’s finest big coaches. But the Celtics will no longer use that kind of a specialist, which may be appropriate, considering that their only true center at the moment is Jermaine O’Neal.

Considering that Boston’s one and only center currently under contract is Jermaine O’Neal, the Celtics should not waste the money that would have been spent on Rogers. Instead, they should invest Rogers’ contract into expanding the team’s training staff, purchasing a new ice tub, or maybe even researching Mr. Miyagi’s ancient Japanese healing tricks. At some point next season, I would bet my Indiana St. Larry Bird jersey that O’Neal will need Miyagi’s special touch.