This makes sense since the Phins are not only thinking about ths draft but the end of the season Free Agency..
http://www.sun-sentinel.com/sports/football/pro/dolphins/sfl-miami-dolphins-trade-bait-draft-s041009,0,4856142.story
RB Ronnie Brown - Considering the average lifespan of an NFL running back is shorter than most positions, Brown's stock might never be higher than it is now since he's coming off a Pro Bowl season. This former first-round pick could possibly produce a first-day selection. But is it worth it? That likely depends on the Dolphins' view of Brown, which will become clearer soon based on the new contract he's offered, and their opinions of the tailbacks in this draft class This could be Brown's last season as a Dolphin. His 2010 contract, which pays him $5 million that season, is voidable.
http://www.sun-sentinel.com/sports/football/pro/dolphins/sfl-miami-dolphins-trade-bait-draft-s041009,0,4856142.story