A's could be active in deep free agent market

The A’s generally make offseason waves via the blockbuster trade, but they might target free agency this winter in an effort to upgrade any number of positions.

The shopping period officially begins Friday night at 9:01 p.m. PT, when free agents can begin negotiating with any club. The A’s have just one free agent of their own in reliever Edward Mujica, and he’s unlikely to return as Oakland looks to restructure a bullpen that struggled mightily last season.

This year’s free agent crop is regarded as one of the best ever, with starting pitching and the outfield particularly deep. No, the A’s won’t be shelling out the big bucks to sign lefty David Price, outfielder Jason Heyward or any of the…