From Jon Heyman -
The Twins have asked the Yankees for one of three top pitching prospects — Joba Chamberlain, Phil Hughes or Ian Kennedy — plus center fielder Melky Cabrera and one or two younger prospects. While the Yankees say they won’t surrender Chamberlain, who became a fan favorite during his late-season callup, they must know they’d have to give up either Hughes or Kennedy to have a chance at Santana. The Yankees are also believed willing to deal Cabrera for Santana even if it leaves a temporary hole in center field.
One would have to assume that the Twins prefer Hughes. So, in the end, if it’s Kennedy who goes, that tells you that the Yankees feel Hughes is too good to let go. But, if it’s Hughes to go, that suggests that the Yankees are not as high on Hughes now (as they once were) or that the Yankees feel that “Kennedy and Santana” is an upgrade on “Hughes and Kennedy.” Most likely, it’s the latter.