At 180 million, he doesn't have much surplus value, if any on the FG scale. I think generously, you might expect him to generate 20 fWAR over his remaining contract. It's probably going to be closer to 15, but we'll call it 20 to be generous. His 180 million contract counter acts most of that value.
Granted, most teams will value that production on the front end pretty highly, so the surplus model isn't the going to be super accurate here. But if they get anything better than 1 top 50ish prospect and some lottery tickets, or 2 borderline top 100 prospects and some lottery tickets, I would be really surprised.