11:15am: While the Yankees did indeed ask about Heyward, along with many other teams, the White Sox and Giants were actually the teams that came closest to landing him before St. Louis pulled the trigger, according to Joel Sherman of the New York Post (Twitter link).
That is not necessarily surprising, in the sense that both clubs were obviously in need of corner outfield help. The former ultimately signed Melky Cabrera and the latter added Nori Aoki. While Chicago ought to be set for the foreseeable future in that position, assuming that Avisail Garcia can fix his hold on one corner, San Francisco could be on the market (though it holds a club option over Aoki).
8:11am: The Yankees engaged the Braves this offseason in trade talks regarding outfielder Jason Heyward, Andy Martino of the New York Daily News reports. Atlanta ultimately dealt Heyward to the Cardinals, of course.
While the report does not indicate how serious the interest was or whether any actual offers were submitted, it does suggest that the Yankees are a plausible suitor when Heyward hits free agency. The team already has Jacoby Ellsbury, Brett Gardner, and Carlos Beltran under contract for 2016, and prospects like Aaron Judge coming up behind them. But New York had a plan to shift Beltran to a DH role if it acquired Heyward, per Martino, and could certainly chart such a course next season.
The other salient takeaway — the item is otherwise largely of historical interest — is that there is increasing evidence that the Yankees are now targeting a certain type of player (young, defensively valuable) that does not quite align with the club’s offseason acquisitions of yore. Indeed, Martino notes that the team also asked the Braves about Andrelton Simmons, although it is far from clear that Atlanta ever engaged on him. New York ultimately traded instead for another fielding-first infielder in Didi Gregorius.