The 6-foot-11 forward from Duke was selected by the Lakers in the second round of June's NBA draft with the 48th pick overall.
Kelly played four seasons for Duke and was part of a national championship team in 2010. During his team at the school, Kelly averaged 7.5 points and 3.7 rebounds. As a senior, he averaged 12.9 points and 5.3 rebounds.
Kelly did not play for the Lakers' summer league team because he was recovering from offseason foot surgery after an injury caused him to miss 13 games last season.
Earlier this month, ESPNLA's Dave McMenamin reported that according to multiple league sources, the Lakers were discouraged by Kelly's progress during the summer and doubted the rookie would be ready for the start of training camp.