According to Tony Grossi of the Cleveland Plain Dealer, Savage feared that the Cowboys would have signed Anderson to an offer sheet containing a poison pill (which remains a valid, but unused, tool for prompting player movement), and then the Cowboys would have traded Anderson to Miami.
Specifically, the Cowboys would have sent the No. 28 overall pick to the Browns plus a third-rounder for Anderson, pursuant to the high-level restricted free agency tender that the Browns had affixed to the one-year starter. Then, the Cowboys would have shipped Anderson and the Cowboys’ other first-round pick (obtained from the Browns as part of the Brady Quinn trade; more on that later) to the Dolphins for the No. 1 overall pick in the draft, which the Cowboys would have then used to select running back Darren McFadden of Arkansas.