Sources: Bauers, Red Sox agree to 4-year, $58M deal

First baseman Jake Bauers and the Boston Red Sox are in agreement on a four-year, $58 million contract, sources told ESPN, uniting the World Series champion with a Boston team that entered the winter looking to upgrade its offense.

Bauers, 31, was one of the Milwaukee Brewers' postseason heroes, capping a breakout season in which he rose from journeyman to one the top hitters in the major leagues.

While Boston has first baseman Willson Contreras under contract for one more season and intends to keep him, Bauers provides an on-base threat with power who can also help fill a hole at designated hitter.

Multiple executives expected Bauers to accept the $23.15 million qualifying offer from the…