NEW : Clippers decline to comment on NBA announcement . The National Basketball Association will proceed with a vote to force a sale of the Los Angeles Clippers , rebuffing an effort by co-owners Donald and Shelly Sterling to sell the franchise voluntarily , NBA spokesman Mike Bass said Friday . NBA will proceed with hearing on forced sale on June 3 . Comment: Donald and Shelly Sterling agree to sell Clippers voluntarily , source says .
NEW : Clippers decline to comment on NBA announcement . NBA will proceed with hearing on forced sale on June 3 . Comment: Donald and Shelly Sterling agree to sell Clippers voluntarily , source says .