BaronorBust found this article over at the ESPN Clippers board, and I thought it was worth reposting here.  Wikipedia also reflects this information, for what that is worth:

http://www.pe.com/sports/breakout/stories/PE_Sports_Local_W_camby_22.19ec753.html

The Warriors have until Friday to match the offer, but two NBA sources said they will not because they signed forward Maurice Evans, who split time between the Lakers and Orlando last season, to a three-year, $6.4 million deal.

The Associated Press contributed to this report.

http://www.latimes.com/sports/la-sp-clippers9-2008jul09,0,7626268.story

Contrary to other reports, the Clippers cannot offer Brand a sixth year in their offer, according to an NBA source who is not authorized to speak about player issues. In order for the Clippers to create enough salary cap space to land Davis the team had to renounce their rights to Brand, thus forfeiting the possibility of tacking on another year, leaving it with the hope of re-signing Brand to a maximum of five years.