Look, I’m not a Heyward fan by any means, but he does some things right. For example, he’s been about a 115 wRC+ over his last 1,000 plate appearances against RHP, with a very solid OBP (~.360) and not a ton of K’s. He’s also plays a pretty good RF and can cover CF in a pinch. He’s obviously completely overpaid and I think Joc might provide more upside if you get the 2018 to 2019 version, but if talking a chunk of his contract reduces the cost of Darvish you at least have to consider it.