We are essentially doing what the Broncos did. They didn't purge the team the first year they had an aging not great roster with a new coach. They did that in the 2nd year for the new coah.
Much like the Broncos, we are going to keep our expensive aging vet QB along with our older players for one year, and then next year we cut the aging vet QB and let go of the older players. The Broncos improved last year despite spending very little in free agency because they hit on a QB and other young players.
Again, I would have done it this year, but I think the plan is to pretty much so do what the Broncos have done over a two year period.