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The Yankees have acquired SS/2B Starlin Castro for SP/RP Adam Warren and SS/2B/3B/1B/probably DH if Girardi could get away with it Zbrendan Rtan.
It’s a pretty fair value trade, as Castro has been awful in two of the past three years but was good in 2014 and he admittedly both hit well and played good defense at second upon becoming a full-time second baseman late last year.
My only issue with the trade is that “fair value” trades are fine in and of themselves, when you have a strength in one area and you want to improve an area where you’re deficient.