I believe Garza is entering his first year of arbitration. Garza was a Super Two in 2010 so he is entering year 2 of 4 in arbitration. So he has 3 years left of team control. In 2008, Shields signed an extension that includes several club options that could keep him under contract through 2014. Not sure if anything changes with those options if he is traded. Here are the details I grabbed from Shields' player page on rotoworld. I think I might prefer Shields because the asking price will be lower and the contract he is under seems pretty reasonable to me. It all depends on what the Brewers would have to add to get one of these two. 01/23/08: Signed four-year, $11.25 million extension w/2012-14 club options. 2009: $1.5 million, 2010: $2.5 million, 2011: $4.25 million, 2012: $7 million club option w/$2 million buyout, 2013: $9 million club option w/$2 million buyout, 2014: $12 million club option w/$2 million buyout, 2015: Free Agent edit: To clear up Garza's arbitration info.