Los Angeles Clippers owner Donald Sterling has sent a letter to the National Basketball Association telling the league he won't pay his $2.5 million fine and rejecting his lifetime ban, a source close to the situation said Friday. The letter also threatens the NBA with a lawsuit if Sterling's punishment for making racist remarks, handed down by NBA Commissioner Adam Silver in April, is not rescinded, the source said. "We reject your demand for payment," the letter says, according to Sports Illustrated. See more at http://www.cnn.com/2014/05/15/us/donald-sterling-nba/