[caption id="attachment_4286" align="alignleft" width="150" caption="Josh Howard"][/caption] The Mavericks appear to have agreed on the major points of a trade that will send Josh Howard, Drew Gooden, Quinton Ross and James Singleton to Washington for Caron Butler, Brendan Haywood and DeShawn Stevenson. The deal is not done. But a source said that the pieces of the trade have been tentatively agreed upon. The trade would require league approval, which could take until after All-Star Weekend. Dallas News