Burnett's replacement. There's some extra cap money. Justttttttt Kidding!
Actually, he sounds like he's being scoped out as Hyde's 2017 replacement, having played nickel and safety. They like having a guy with nickel/safety position flexibility for that extra roster spot on the 53 and the game day roster. He runs 4.50 and might add value as a gunner.
After a year or two on practice squads trying to make a third, one would hope he learned his "yes sirs" and "no sirs", a prerequisite.
It's about as close to mandatory as you can get that the Packers add a safety or two on the PS, if not one on the 53 man roster.