SACRAMENTO — Andrew Bynum has a bone bruise in his right knee, an MRI exam revealed today. “The injury is not deemed to be serious,” the team said in a statement. Matt Barnes also had an MRI on his surgically-repaired right knee,which revealed no new damage. Neither will play in tonight’s regular-season finale against the Sacramento Kings, but they are expected to be ready when the playoffs begin this weekend. Bynum hyperextended his knee during the Lakers’ victory Tuesday over the San Antonio Spurs. Barnes could not play against the Spurs after aggravating his knee after Sunday’s loss to the Oklahoma City Thunder.