At the very least, he can be a backup OLB and ST guy. He's under contract on a rookie deal, we shouldn't be in a rush to get rid of him. All of our players are essentially getting to start with a clean slate.
I think with the depth of this years draft at NT/DT, I would ship all DTs not named Ridgeway and Bresee out with trades for draft capital to 4-3 teams.
Without signing anyone and just extending Young, we start with the front 7 below.