The season has ended, and I believe seven teams are looking for coaches: Broncos, Cardinals, Dolphins, Jets, Buccaneers, Browns, and Bengals.
The Packers were another team, but they just filled their spot with Matt LaFleur, the Titans OC. I understand the Buccaneers are set to hire Bruce Arians. The LaFleur hiring has me thinking about the Titans next OC. Two names come to my mind quickly Mike McCarthy and Adam Gase (assuming they don’t become head coaches). I like McCarthy because I think he’ll help Mariota develop good footwork and mechanics. I don’t care for his pass-first approach, but seeing the footwork and throwing of QBs who played with McCarthy, I’d be excited about this hire. (McCarthy going to the Raiders would be cool for the same reason.)
As for Gase, I think his spread/shot-gun offense would be ideal for Mariota. Plus, I think for this type of offense, Gase might be the best out there–or at least one I really like. I really like his play calling. The way he integrates pro style and spread (especially last year) looked really good to me as well. If you’re going to have a predominantly spread offense, I’d choose him (or Belichick).