From what I'm seeing on FanGraphs, he's using his change just as much as he did last year, and using his curveball more this year. Last year as the "2 pitch pitcher" he did pretty well earning 4.8 fWAR. Can't explain the uptick in walks this year... Maybe it's injury, maybe it's something else. If the underlying motivation is not helping the White Sox reload, okay. I still think Quintana is a damn good pitcher, and would be a great target for the Twins.