Young confirmed the news on his Twitter account.
Thanks to the @packers for the opportunity great organization great team wonderful fans good luck this season.
— Vince Young (@VinceYoung) August 31, 2013
It marked the second straight season that Young, the third overall pick of the Tennessee Titans in the 2006 draft, failed to make a team coming out of training camp. He was released by the Buffalo Bills last August and spent all of the 2012 season out of football.
Young, 30, played in all four preseason games for the Packers despite limited knowledge of the offense. In his most extensive playing time of the preseason, he completed 14 of 30 passes for 144 yards without a touchdown or interception on Thursday at Kansas City. He fumbled twice, losing one, and led only two scoring drives against the Chiefs, both of which ended with field goals.