I just saw that he was released from the Raiders and that he was brought in to be part of their zone blocking scheme. I wasn't sure if he would be worth looking into, but a ZB Guard that could be had for a reasonable contract should be checked out in my opinion. I just don't really know anything about him.
http://profootballtalk.nbcsports.com/2014/04/01/raiders-release-displaced-guard-mike-brisiel/
http://profootballtalk.nbcsports.com/2014/04/01/raiders-release-displaced-guard-mike-brisiel/