Maine, 31, was released by the Red Sox on good terms two weeks ago. He signed with Boston in January. He has not pitched in the Minors this season, and last pitched in the Majors in 2010, with the Mets. He is said to be in good health after undergoing shoulder surgery in 2010.
The Yankees have not commented on their plans to sign Maine, who has been working out with them since parting ways with the Red Sox. He will not immediately be assigned to Triple-A.