Brewers third baseman Mike Moustakas and right-handed reliever Joakim Soria have declined their mutual options and have elected to become free agents.
Moustakas hit eight homers with 33 RBIs after coming to the Brewers before the non-waiver Trade Deadline from the Royals in July.
Soria pitched in 66 games for the White Sox and Brewers, all in relief, with a 3.12 ERA.