Allen last appeared in the Majors in 2012 with the A's (three games) and the Rays (seven games). He has also played with the D-backs, and he sports a career .203/.290/.375 line with 12 homers in 116 Major League games.
Cash Kruth is a reporter for MLB.com. Follow him on Twitter at @cashkruth. This story was not subject to the approval of Major League Baseball or its clubs.