This is a pretty solid prediction. Not saying it will happen, but it makes a lot of sense on some levels. If Pace/Nagy really feel their jobs are on the line, they could sell ownership on the fact they think they have their franchise QB in waiting. My hang up on something like this is I don't think anyone is trading for Trubisky. He's had trouble learning Nagy's offense in the 2 years in Chicago, I don't see a team taking him this late in the process, with no OTAs, and thinking he can learn their offense in the year he has left under contract....not to mention the month of camp he'll hopefully have if they want him to start Week 1.
Also of note, Seattle LOVES to trade back in the draft. They did so 3 times before they picked in 2019 and 3 times before their first pick in 2017. Also traded back in 2018.
Last year, the Redskins traded up from 46 to 26 (to the Colts) and the price was a 2020 2nd rounder. So, conceivably the Bears could get to 26, while keeping 50 and their 2021 first round pick. Not advocating for any of this to happen, just pointing out that this prediction, while bold, certainly is not unheard of.