According to FOXSports' Ken Rosenthal, the Cubs are set to add to their outfield depth. This doesn't come as a surprise, as Patrick Mooney discussed the possibility earlier this week. Hairston turns 33 in late May and enjoyed the best season of his career last year with the Mets, when he hit 20 homers with a .803 OPS in 377 at-bats. He sported an .867 OPS against left-handed pitching last season and sits at .825 against southpaws for his career. The signing adds another outfielder to the mix for the Cubs, who already have veteran Alfonso Soriano and lefties David DeJesus and Nate Schierholtz. Hairston could platoon with Schierholtz in right field and could even spell DeJesus against lefties. The former third-round pick of the Diamondbacks has proven capable of playing all three outfield spots over his nine-year MLB career, even registering 149 games in center field. Hairston and his family are very familiar with Chicago, as he spent a couple years in the suburbs while his brother, Jerry Jr. -- who played for the Cubs in 2005-06 -- graduated from Naperville North High School. Hairston's grandfather and father both played for the White Sox.