'Technically, Mario Williams is still a member of the team, but it's only a matter of time until he's sent on his way. That will open a big hole on Buffalo's defensive line. Ideally, the player who replaces Williams will be able to both provide a pass rush and be stout against the run. Those types of players are valuable commodities, which is why it would make sense if the Bills were to use their first-round draft pick, No. 19 overall, on the position.'