That will become official on Thursday, when Matt Flynn starts against the Detroit Lions.
Coach Mike McCarthy made that announcement Wednesday, when he also ruled out Aaron Rodgers for a fourth straight game because of the broken collarbone he sustained Nov. 4 against the Chicago Bears.
Rodgers returned to practice Tuesday in a limited fashion but was not cleared for game action. Scott Tolzien, who started the previous two games, will be the backup.
Source: Rob Demovsky, ESPN.com