GREEN BAY, Wis. (WKBT) -

Matt Flynn will be the starting quarterback for the Green Bay Packers on Sunday when they play the Pittsburgh Steelers.

Head coach Mike McCarthy Aaron Rodgers is not medically cleared to play. Rodgers broke his collarbone earlier this season.

“As an organization, we are not ready for him to play,” McCarthy said, adding that it has to do with Rodgers' health.

McCarthy said Rodgers “attacked rehab,” made strides in the weight room and “did really good things in practice,” but the organization made the decision that Rodgers will not play on Sunday.

“He understands where we are,” McCarthy said of Rodgers reaction to the news. “He obviously wants to play.”

McCarthy said they feel confident with Matt Flynn as their quarterback and feel they can beat Pittsburgh.