The contract situation is nice but he's put up 4.7 rWAR in 78 starts with the Cubs. The only real certainty for a WS contender, and since he's a pitcher it's not like the most certain certainty, is that he'll throw alot of innings. Personally I'm willing to trade some of that certainty on the pitching staff (Darvish, Hendricks, Lester aren't major 2020 injury risks on paper) for depth and possibly higher upside pickups, especially if in a roundabout way it improves the position group offense and defense I still think all of this trade talk (Contreras, Quintana, Schwarber, Bryant, etc.) had better bring back immediate help for 2020-2021 and not just prospects with upsides.