Since June, Ryu has a 4.98 ERA (4.34 FIP) and 6.61 K/9 in about 100 innings. This being the start of his decline is very possible. As long as he's healthy, then hopefully he can serve as a league average ish innings guy (think 2015 Buehrle/Dickey), which will have value, but we might be seeing why no other team wanted to go above 3 years for him.