If it is noise, then it's the Yankee Stadium part rather than the road split, which is extremely close to his career road xFIP. However, his walk and k rates are dramatically and more importantly consistently worse at Yankee Stadium. Maybe it's the mound, maybe it's in his head. Regardless, I see him as a sub 4 xFIP pitcher, with upside, on a reasonable contract and an extra year of control. That's probably worth at least 15M/60 next year on the FA market, and he'll probably make about 9M unless he has a killer 2nd half.