Manaea (shoulder) will likely make his next rehab start Tuesday at Triple-A Las Vegas and throw around 75 pitches in the outing, Martin Gallegos of MLB.com reports.
Manaea tossed 3.2 scoreless frames during his last start with High-A Stockton, proving that he's ready to rehab at a higher level. He'll likely require at least two or three starts with the Aviators before Oakland considers activating the southpaw from the 60-day injured list, however.