He should know what the Packers want and how they want things done.
This should make him easier to coach.
When Hundley, Callahan or the coaches call a play, he should already know the route, timing and how the ball usually comes.
Probably not going to get many balls thrown his way by Rodgers in practice though.
Might already have some practice time on Special Teams too.
It is a advantage that he has, all he has to do is produce.