Coach Selection, the Cap and Rebuilding Question

[Bill B]

After reading multiple posts that say if we select anyone outside of Greg Williams we will be basically rebuilding again, I had a question for the cap experts on this site as it relates to this: lets say we bring in a whole new coaching regime from the outside - are the Skins really in position to scrap the players currently on the roster and bring in a new group of players to start all over again? My guess would be that given the cap situation even if we brought in a new coaching regime from the outside we really are stuck with a lot of the players on the roster whether the new coach likes them or not and that bringing in a whole new set of players for the new coach would take multiple seasons to accomplish. Further I would ask can you address this question as it relates to the defense and bringing in someone like Rex Ryan who is I believe a 3-4 scheme coach - can the Skins really offload players to fit a 3-4 scheme cap wise? Or would it be more realistic to say Rex Ryan adjust his scheme to fit the skill sets of the players on the team? Just wanted thoughts on this as I would think from a cap perspective a complete rebuilding/team overhaul would be hard to accomplish in a short period of time and would take multiple seasons.