The Brewers have added a little pitching depth to the organization, according to Chris Cotillo of MLB Daily Dish:
Mills is 28 and has pitched in four major league seasons as a member of the Blue Jays and Angels, but has made just 15 appearances (ten starts) across those campaigns, and hasn't pitched in the big leagues since 2012. He's spent most of the last seven seasons in the minors, and posted a 3.87 ERA across 18 appearances (17 starts) for AAA Round Rock in the Rangers organization last season.
MLB Trade Rumors reports that Mills requested his release from the Rangers midseason in 2013 to sign with Japan's Orix Buffaloes, but he made just one NPB appearance.
Mills is left handed, and based on his small MLB sample size FanGraphs says his fastball sits in the mid-80's. He also throws a changeup and curve. His platoon splits in the minors last season show he wasn't significantly better against either lefties or righties:
|v RH batters||283||.252||.311||.378||.689|
|v LH batters||128||.239||.299||.368||.667|
He did, however, show a more pronounced split in 2012 (.866 OPS against vs righties, .772 vs lefties).
It's unclear at this point if Mills will receive or has received an invitation to major league spring training. At the moment he seems more likely to provide depth at Nashville than to be a significant contributor in the big leagues.