What happened: The Green Bay Packers claimed defensive end Arden Walker off waivers from the Minnesota Vikings. The transaction moves the rookie between division rivals midway through the exhibition schedule.

Why it matters: Green Bay adds youth and depth to its defensive line rotation as it evaluates talent ahead of final cutdowns. Walker gets an immediate opportunity to secure a role within the NFC North after his initial training camp stint in Minnesota.

What to watch: Walker will compete for a spot on the 53-man roster during the remainder of the preseason.