No team in the NFL will trade for a RB with bad knees, who's effectiveness (even last year) will never be like he was in his prime. Furthermore, his contract was ridiculous and noone would pick that up even if he was tradeable.
Ditto, and on top of that, who would then be the starter? Another thing is that DOOOCE should be perfect for 20-25 carries a game as he shares the load that hopefully extends his career.
Why would he be perfect for 20-25 carries a game? Thats a full load for a feature back who doesn't share the role, except for breathers. Deuce might be good for 10 carries a game, if we are lucky, coming back next year or probably ever.