The Steelers head into this offseason faced with several questions, but replacing Shazier is the biggest. There is not a player available who can replace all he brought to the team, but they have to look.
Even if they can find someone to replace all of his production on the field it is unlikely they could be the leader of the defense, like Shazier was, in their first year. No matter who plays in the middle it seems likely that someone is going to have to step up.
I would like to see someone like Vince Williams step up, and make the energizing plays Shazier provided. Personally I would like to see the team sign someone like Todd Davis who can play immediately, and pick a high upside player like Rahsaan Evans, or Malik Jefferson in the draft, if they are the best player available.