Just to play devil's advocate, the NFL is extremely cut throat. For example, we see every season during the draft, all of a sudden there is this or that issue with a player who is a surefire first round pick and all of a sudden he's fallen into the 2nd round. I've lost count on how many times this has occurred with an Alabama player. And we all know it was an effort by a team who really wanted said player but didn't want to give 1st round money.
This has to happen with veterans during negotiations as well. I realize Coop has had his weird moments with Dallas, but I also know that Jerry Jones is a straight up buffoon when it comes to managing talent, and Jason Garrett was a human celery stalk on the sidelines posing as a legit coach. They are way too overboard on money when it comes to Dak (overrated anyway) and Zeke Elliot. You know they don't want to pay Coop... and this narrative is already out there... it's a nice little way for them to undercut him in salary negotiations.
I do acknowledge that he hasn't been consistent in the NFL. It's possible he really doesn't truly love the professional game. BUT... 81 is absolutely correct that he hasn't had anything but mediocre to bad management above him. We'll see how it goes. He was one of my favorites and I hope it does work out for him.