Madison's cap hit makes him nearly impossible to trade, even if he does look much better than last year. No, the rebuilding will come in the offseason. Slash the dead weight from the roster, thus saving around $18 million, get as much as possible for Ricky Williams and trade down from our likely top 5 pick and stockpile a bunch of draft picks.
Dallas might end up with a top 5 pick from Buffalo. They'd probably pay a big price to draft a pair of top 5 guys. Get their #1 (their own, not the one from Buffalo), #2, #3 and a future #1.