Allegedly, he is pissed at the Cubs for manipulating his service time and will not re-sign with them. All of Chicago is panicking - even White Sox fans because the Sox are doing the exact same thing to Eloy Jimenez.
Bryant should be mad at MLB for making the rules, not the Cubs for using them to their advantage. And when you are later offered 200 hundred million...how can you be mad? I'd say in the end things are working out just fine for ole blue eyes.