Bostick announced the move yesterday on his Twitter account and thanked everyone for the support.
Thankful To Spend The First 3 Years Of My Career In GB. Unfortunately My Time There Has Ended. I Appreciate The Support From Everyone In GB!
— Brandon Bostick (@Bostick11) February 16, 2015
Bostick, 25, had another year remaining on his three-year, $1.485 million rookie contract, which included a base salary of $585,000. He would have been a restricted free agent in 2016.
Releasing Bostick would free up $585,000 in available cap space while creating no dead money, according to OverTheCap.com.
In 2014, Bostick appeared in 13 games for the Packers, but caught just two passes for three yards and a touchdown.
Unfortunate for the young tight end, his time in Green Bay will be remember for the botched onside kick in which he was supposed to be blocking, but lead to a dramatic comeback for the Seahawks in the NFC Championship game.
Dorsey, 24, is a former seventh-round pick of the Packers back in 2013 out of Maryland. He suffered an injury during his rookie season, which subsequently cost him the entire year.
In 2014, Dorsey appeared in three games, recording two tackles on special teams and one catch for 4 yards before once again being placed on injured reserve.