I'm a Packers fan.... but if I were the Bears GM... I think the smart play is to just keep Fields and trade away the 1st pick for a bunch of draft picks. I think Caleb Williams is just another Fields. No difference IMO. In fact, Fields might be better IMO. Williams could just be another Bryce Young.
But I think the Bears will draft Williams with the 1st pick, and then get what they can for Fields. And it's hard to argue with that honestly. The fans aren't thrilled with Fields, they want to go in a different direction. And if you pass on Williams and he turns out to be an elite NFL QB... you're done for as GM, and the Bears might not recover from that for a LONG time. The risk of passing on Williams might be too big.
As for the Packers.... we need DB's.... mostly safeties, but a corner would be good too. I think they would love to get Dejean (and play him at safety) in the first round if he falls that far, but probably doubtful. My dream would be Dejean in rd 1, and Tampa in rd 2. We also need a LB IMO because I don't think they will bring back Devondre Campbell. After that, need OL and probably a RB at some point because I don't think they bring back AJ Dillon.