When I look at that Bears roster, I have a feeling the Lions aren't going to be finishing last in the division. It's pretty bare around Fields and they drafted defensive guys with what picks they had. I would rather throw Fields on the Lions roster that projects to have a good OL, receivers, TE and solid run game.
I wouldn't rule out a veteran. Lamar Jackson is in the last year of his contract. He seems upset the Ravens traded away his receiver. The Ravens likely franchise him but he could be a trade candidate. I'm not a fan of QBs like Jackson long term, but he could be someone to watch.