UPDATE: There was some hope that they could obtain a 3rd round compensatory pick for him, but a 4th round pick (at the end of the round) isn't bad. One last benefit from his great career with the team. More on the compensatory picks, Carolina was the big winner, from SB Nation.
The Green Bay Packers received a compensatory 4th round pick for the loss of free agent DE Aaron Kampman. Kampman was let go after a difficult position change to outside linebacker and a season ending knee injury.
Ted Thompson has had some success drafting in the 4th round, finding RG Josh Sitton and LG T.J. Lang. But another possibility is that the Packers trade up into the first round using other picks (not their newest 4th rounder, comp. picks can't be traded). The Packers could trade their other 4th, or even a 3rd round pick to move up higher into the first round.