It's clear the Packers made an offer, which tells me they viewed a trade and signing as viable. I would not have been happy had they given up the same value as the Bears, and I do worry about how the CAP numbers would have limited the Packers going forward.
I wish someone other than the Bears had gotten him, but it's not clear if he'll make enough of a difference. They'll obviously be better, but their turnaround will depend more on Trubisky than Mack. If Trubisky doesn't work out, the Bears might really regret this deal.
Lastly, there has been a lot of back and forth in shout about how a deal to move Mack would never happen and he'd end up back with the Raiders. I mostly agreed. Clearly, that was incorrect. If an owner/coach/GM want someone gone bad enough, it can happen. No matter how foolish it is.