The Los Angeles Clippers exercised the fourth year option on the 1999 first overall pick Elton Brand on Monday, ensuring their young nucleus remains for at least one more season before both Brand and forward Lamar Odom look for their big pay days.  Brand was acquired from the Chicago Bulls on draft day for the second pick in the draft, high schooler Tyson Chandler.  Brand averaged at least 20 points and 10 rebounds per contest in his first two years in the league.