The Boston Red Sox are readying an offer for Pablo Sandoval, according to a Major League source.

Sandoval is the team's highest priority despite a meeting with Jon Lester that resulted in a contract offer.

The third baseman spent most of Tuesday with the Red Sox. He may join his agent on a call with the San Francisco Giants on Wednesday night.

Those close to the Red Sox believe Sandoval's interest in the club is genuine and not merely a tactic to gain leverage with the Giants.