Barrero declined an outright assignment from the Orioles and elected free agency Thursday, Francys Romero of BeisbolFR.com reports.
Barrero went 1-for-6 at the dish in a cup of coffee with Baltimore this season and slashed .202/.305/.400 with 23 homers and 13 steals at Triple-A Norfolk. The 28-year-old is now free to latch on with a new organization.