My bet is Aaron Williams being done - that neck issue ain't going away. Goodwin has a thin bone disorder - he's done.
The loss of EJ, John Rambo, The Duke of stasis, Seantrel Henderson, Nigel Bradham, Percy Harvin, Cordy Glenn is inconsequential.
Mario is at the end of his utility to the Bills as the playoff window closes on an aging defense due to the lack of a capable qb.
Kyle is old but affordable, Robey is effective, and Woods has been turned into a block first wr due to the lack of a capable qb.