It's quite a hall, but I always like getting the best player in the trade. Depends on how the rest of your team shakes out, but for the #1 or 2 RB in fantasy you get 3 guys inside the top 20 at their respective positions.
3 starters for 1, sign me up. You lose AD, but you get 2 WR2s and a RB2-3. Just make sure you aren't too thin at RB if you make the deal.
Putting a lot of faith in Shannahan and Torain that he retains value. You know AD's #s are gonna be there in the end no matter how bad the Vikes are.