I would say this is the most likely scenerio, and the smart way to go, IMO.Tua would be dead behind the current oline. IMO Rosen will be the odds on favorite to be the 2020 starter regardless of who they draft, and they will definitely draft a QB. They will rebuild the oline and D this draft/FA and roll with Rosen in 2020. Some may not like it but that’s how I see it playing out.
What i don't know, is if Herbert is the choice, or maybe the next teir of someone like Love in rd2.