Question - if the Bears traded Robert Quinn (humor me on this), his dead cap hits the 2021 cap, and the new team has him with no future dead cap liability? He could be a one year rental and then cut before 2022 and whatever cap hit he would have had was already eaten by the Bears?
Yep. That's exactly right. I don't see him having value, but let's just say you could trade him for a conditional 7th rounder with the condition being he wins MVP- whatever outrageous condition where you're just giving him away and the receiving team basically has a 11.5M 1 year deal with options (effectively) and no dead cap.
I'm still skepitkal you could find someone so I think you're now at the point of attaching something of value to him like a draft pick. But in theory it works for both teams, 11.5m total net savings for the Bears (spread out over 2 years for cap purposes). Free trial for the receiving team.