|Photo from CBS Sports|
Sox agree on 7 year 72.5m deal with Castillo , joins club this season: Source
— Gordon Edes (@GordonEdes) August 22, 2014
The 27-year-old will join the team this season, according to Edes' report on ESPN Boston. He'll be joining fellow Cuban defector, Yoenis Cespedes in the outfield.