The answer is found by referencing the Transition and Process Agreement.

Any new vacancies occurring on either side before the operational integration will be staffed by offering the positions first to the furloughed pilots from the airlines. Since CAL has recalled all of their furloughees, any vacancies on future CAL system bids will be offered first to United furloughed pilots in seniority order. However unlikely, should all of them bypass, the company would need to look for "off the street" hires.