Joakim Noah (L) of Chicago Bulls attempts to save a ball during the NBA basketball game between the Charlotte Bobcats and the Chicago Bulls at United Center in Chicago, IL, United States of America on Nov. 18, 2013. Bulls won 86-81. (Xinhua/Shen Ting)

Chicago Bulls head coach Tom Thibodeau (L) reacts during the NBA basketball game between the Charlotte Bobcats and the Chicago Bulls at United Center in Chicago, IL, United States of America on Nov. 18, 2013. Bulls won 86-81. (Xinhua/Shen Ting)

Carlos Boozer (R) of Chicago Bulls lays up the ball during the NBA basketball game between the Charlotte Bobcats and the Chicago Bulls at United Center in Chicago, IL, United States of America on Nov. 18, 2013. Bulls won 86-81. (Xinhua/Shen Ting)

Jimmy Butler (L) of Chicago Bulls drives the ball during the NBA basketball game between the Charlotte Bobcats and the Chicago Bulls at United Center in Chicago, IL, United States of America on Nov. 18, 2013. Bulls won 86-81. (Xinhua/Shen Ting)

Derrick Rose (front) of Chicago Bulls drives to the basket during the NBA basketball game between the Charlotte Bobcats and the Chicago Bulls at United Center in Chicago, IL, United States of America on Nov. 18, 2013. Bulls won 86-81. (Xinhua/Shen Ting)

Derrick Rose of Chicago Bulls shoots a free throw during the NBA basketball game between the Charlotte Bobcats and the Chicago Bulls at United Center in Chicago, IL, United States of America on Nov. 18, 2013. Bulls won 86-81. (Xinhua/Shen Ting)