Source: Craig Calcaterra, NBC Sports 
So far this offseason the Yankees have re-jiggered Derek Jeter‘s contract and signed Brendan Ryan. What’s one more shortstop among friends?
— Jon Morosi (@jonmorosi) November 18, 2013 
Of course Peralta could play third base as a hedge against an A-Rod suspension.
If the Yankees are in on Peralta, you have to figure they’re in on Stephen Drew too, and would go for one or the other.