Outfield
Left Field: Mike Mathook
Center Field: Andrew Romine
Right Field: John Hicks
In a rebuilding phase this is a fairly weak outfield. Romine and Mathook are both having good enough years to be starters next year in this this theoretical and impossible scenario.
But Hicks may seem like a stretch in right. I disagree with that, I think it is a good fit.
He has played a few games out there in Triple-A. Because of his natural position of catcher he will have the arm to play there.
But mostly he is out there because of his bat. He could play first and shift Castellanos out there, but Hicks has more experience.
With his bat though, creativity will be key. He needs to be in the lineup somewhere.
It may seem crazy to try and use Hicks in the outfield just for his bat, but he is too good of a hitter not to. Even if he proves to be a liability with the leather it is worth it for the offensive production.
Disclaimer
This is a very highly improbable, nearly impossible, and completely theoretical scenario.
The Detroit Tigers will not need to rebuild this much. And they will look externally to make moves as well. That just cannot be predicted.
In doing this exercise it exposes the future from what the Detroit Tigers are grooming in their farm system, and off of their bench.
Next: It's true, the Tigers have pieces to trade some veterans, still contend.
What actually happens will be fun to watch. I have no doubt that hey will be sellers, but the question is who gets sold?