Maeda (triceps) is set to begin a minor-league rehab assignment Tuesday with Triple-A St. Paul, Do-Hyoung Park of MLB.com reports.
Maeda will probably be asked to make a handful of rehab starts given the amount of time he's missed. The 35-year-old right-hander posted a 9.00 ERA across his first four starts (16 innings) this season before going on the injured list in late April due to a right triceps strain.