Photo: Thearon W. Henderson / Getty Images

Sean Manaea’s next rehab outing, after working 3 2/3 scoreless innings at Class-A Stockton on Thursday, will be at Triple-A Las Vegas, probably Tuesday against El Paso.

The A’s left -ander threw 64 pitches Thursday, so could be up to 75 pitches or so in his next outing. He’s likely to make three starts with the Aviators, putting his return date with Oakland at Aug. 7 - precisely when his 30-day maximum IL stint would end.

Unlike Jharel Cotton, who is returning from Tommy John surgery in a relief role to limit his innings, Manaea’s return to the A’s will not depend as much on performance. Oakland’s 2018 ace, who had left shoulder surgery Sept. 19, probably has earned his rotation spot, though he has options left.

“We want him to feel comfortable, we want him to get up to 90 pitches a couple of times, and we obviously want him to have some success,” manager Bob Melvin said. “If he has the type and stuff and velo he has right now, pretty good chance he gets here when he’s ready.”

Susan Slusser is a San Francisco Chronicle staff writer. Email: sslusser@sfchronicle.com Twitter: @susanslusser