‘Wannstedt has said the Bills will wait until after the draft to see exactly how much depth they have up front and who fits where, so it’s not even clear at this point how the pieces will mesh. But with so many needs elsewhere (wide receiver, offensive line, linebacker), the Bills probably won’t even think about defensive linemen until the middle of the draft, when they have extra picks in the fourth or fifth rounds. The best guess would have them grabbing a defensive end to add depth to their rotation and guard against Anderson failing to live up to the huge seasons he posted as a rookie and last year. Possibilities include Tennessee’s Malik Jackson, Texas’ Kheeston Randall, Cal’s Trevor Guyton and Cincinnati’s Derek Wolfe. They could add a tackle later on.’