The A’s have acquired left-hander Brad Mills from the Brewers in exchange for cash considerations, the Brewers’ player development department announced (on Twitter). Milwaukee will receive only nominal consideration in return, reports Ken Rosenthal of FOX Sports (via Twitter).

The 29-year-old Mills recently had an opt-out date come and go in his contract, but reports indicated that he was able to opt out at any time in favor of a Major League opportunity. Instead, he will head to the A’s where he will presumably have a chance to crack the big league roster in some capacity.

Mills has been excellent at Triple-A Nashville this season, pitching to a 1.56 ERA with 9.2 K/9 and 2.2 BB/9 in 75 innings of work (14 appearances, 12 starts). He’s struggled in 53 1/3 innings at the Major League level in his career, however, posting a 7.76 ERA with a 51-to-31 K/BB ratio.