NEW : African-Americans decline to comment on NBA announcement . The National Basketball Association will proceed with hearing on forced sale on 31 . They are also estranged , Shelly Sterling 's attorney has said . Donald is negotiating with NBA about voluntary sale , source says . Shelly Sterling and Shelly Sterling agree to sell Clippers voluntarily , source says .
NEW : African-Americans decline to comment on NBA announcement . The National Basketball Association will proceed with hearing on forced sale on 31 . Donald is negotiating with NBA about voluntary sale , source says . Shelly Sterling and Shelly Sterling agree to sell Clippers voluntarily , source says .