Aaron Rodgers confirmed that he has a broken left collarbone, which could keep him out of the Green Bay Packers' lineup until December.

Rodgers and the Packers have not set a timetable for his return.

"We're still going through the process of testing," Rodgers said Tuesday on ESPN 540 in Milwaukee. "But we do know that the collarbone is fractured and we still have not talked about or discussed any long-term prognosis."

Rodgers will not need surgery on the injury that occurred in the first series for the Packers in their loss to the Chicago Bears.

"I'm in some pain," Rodgers told ESPN 540. "It's obviously disappointing what happened last night with the injury and the loss. ... Holding out hope this will be a quick heal, but this is a significant injury."

Rodgers went into the locker room and returned in the third quarter in sweats to a loud ovation from the crowd.

"When I walked back on that field -- I'm getting a little choked up here just thinking about it -- that was one of the top five moments of my career," Rodgers said Tuesday. "The reception I got from the fans was pretty special."