The Yankees landed one big name, so now the expectation is that they will grab others.

So, why is the club talking to second-tier free agents such as outfielder Nate McLouth?

Because catcher Brian McCann is only one piece, and the rest of the Yankees’ offseason has yet to unfold.

It’s quite a complex puzzle, actually. And, yes, there are scenarios in which the Yankees might want a relatively inexpensive outfielder such as McLouth, with whom they remain in contact, according to major league sources.

Let’s say the Yankees, after securing McCann for $85 million over five years, re-sign second baseman Robinson Cano and right-hander Hiroki Kuroda and also land Japanese right-hander Masahiro Tanaka.

At that point, it would seem unlikely that they also could add a high-priced outfielder such as Carlos Beltran or Shin-Soo Choo — unless, of course, they ditched their stated goal of remaining under the $189 million luxury-tax threshold.

Enter McLouth, or someone like him, to an outfield that currently consists of — ahem — Alfonso Soriano, Brett Gardner and Ichiro Suzuki.

Beltran, one of the most popular players on the market, figures to sign before the end of the winter meetings. But Choo and Jacoby Ellsbury, both of whom are represented by the slow-playing Scott Boras, likely will take longer.

Cano also could linger, depending upon the state of his market. Tanaka’s availability remains in doubt because of the dispute over the Japanese posting system. And don’t forget third baseman Alex Rodriguez, whose 2014 salary — and luxury-tax charge — hinges on the length of his suspension.