GT, Vernon is actually an outstanding blocker.

Canuck, Vernon could probably do what Walker does, but it would take him out of what he does best, which is get down the field. If he is not coming off the LOS, that is just that much more space he has to go in order to go deep, and it is a greater opportunity for LBs to jam him at the LOS and for DBs to drop into coverage. So if I were going to replace Walker I would look where we did when we drafted him, a relatively large wide receiver who does not have great speed for a receiver but good speed for a TE. Guys like that fall because they were listed as receivers at the Combine and still probably see themselves as receivers, so they do that in their pro days. Guys like that often fall into the middle rounds (like Walker did to the 6th).