The signing has not been confirmed by the club. The details of the deal were not immediately known.
A nine-year Major League veteran, Cintron played 21 games for the Nationals in 2009. The 31-year-old sports a career .275 batting average with 33 home runs and 222 RBIs in stints with the D-backs, White Sox, Orioles and Nats.
Cintron batted .285 in Triple-A last season. He was a regular for Arizona from 2003-05, and had his best season in 2003, when he batted .317 with 13 homers and 51 RBIs in 117 games.
Bailey Stephens is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.