Yankees manager Aaron Boone said Sunday that Montas (shoulder) could require a trip to the injured list, Bryan Hoch of MLB.com reports.

The Yankees reportedly have Montas' MRI results, but they want him to be seen by the team physician in New York before making a final determination on his timetable. Montas appears to be trending in the wrong direction after the team announced Saturday he would miss his next turn through the rotation due to the right shoulder discomfort he experienced in his start Friday in the Yankees' 7-6 loss to the Brewers.