Quero has been on the 7-day injured list since Aug. 17 due to a back injury, James Fegan of SoxMachine.com reports.
The club has yet to reveal a timetable for Quero's return, and Paul Janish, Director of Player Development, stated Monday that the backstop will likely remain out a bit longer, per Fegan. "At this juncture of the season, we just need to make sure that he's completely healthy," said Janish. Quero was being considered for a September promotion prior to suffering the injury, and his current placement on the IL could prevent him from making his big-league debut if he's not activated in the near future.