Perez signed a minor-league contract with the Cubs on Tuesday.
Perez's chances of securing the No. 2 catcher job have increased significantly with the recent demotion of Tyler Soderstrom to Triple-A Las Vegas to start the season, Martin Gallegos of MLB.com reports.
Perez signed a minor-league contract with the Athletics on Jan. 5.
Perez elected free agency Monday.
Perez cleared waivers and was outrighted to Triple-A Las Vegas on Thursday.
Perez went 2-for-4 with a solo home run and an additional run in a win over the Blue Jays on Wednesday.
Perez went 1-for-4 with an RBI single and a run in a win over the Cardinals on Wednesday, his first start since being activated from the injured list Tuesday.
Perez (thumb) was reinstated from the 10-day injured list Tuesday, Martin Gallegos of MLB.com reports.
Perez (thumb) started at catcher and played seven innings in Triple-A Las Vegas' win over the River Cats on Monday, going 3-for-4 with an RBI single, two doubles and three runs.
Perez (thumb) took a full game's worth of plate appearances as the designated hitter in Triple-A Las Vegas' loss to the River Cats on Saturday, going 2-for-4 with an RBI single, a walk and two runs.