I'm working to double-check my list of available minor league free agents. I went off a list posted on mlb.com, but that list has changed significantly in the past week. Some of the players may have signed, but I also have the feeling that some of the players I identified are not actually free agents. I may post an updated list soon.
UPDATE: The original list I looked at is only of minor league players eligible for free agency due to six years of professional experience. They should all be free agents. However, there are other minor league free agents as well, so I will be posting an additional list shortly. Click here to see the full list of six-year minor league free agents.