I'll go along the line with personal responsibility, so Trouba. But I actually voted for his agent.
Yes, I completely agree that Trouba ultimately pulls the pin or not, but there are lots of stories out there of people being given misleading information, be it investing, general life advice, or having an agent bargain for you. How much of the information is Trouba actually being given? Yes, we assume all of it, but I think a savvy agent coupled with a naive player can manipulate a situation pretty easily. Is that happening with Trouba and Overhardt? Impossible to ever say because we'll never have all the information available to us but it's certainly not beyond the realm of possibility. Of course that said it comes right back to Trouba anyway because if he's not being diligent about getting all the information from his agent and being sure he does then it's still his fault. But how much trust is there in the relationship and how trustworthy is his agent (see Eagleson, Alan).