Jarryd Hayne NFL

Seems to be a bit of hype around Jarryd Hayne (Plane), maybe we should send a few NRL players over to show the Yanks how to play proper footy

Do you think he'll be on the team for the first game proper?

I know he's looked pretty good but he's not against the other teams starters.
I think it will come down to if the 49ers feel like they have room for a player who will be a return specialist and a development back.

I know nothing about NFL so done a quick Google research.
From what I learnt in 5 min coming over to play NFL for Jarryd would be a big change, I would think he could get bored I`m sure the money will help though

Please correct me if I'm wrong on any of this:
NFL can field up to 46+ players a game What chance have you got of getting a run or even touching a ball?
Games run for 60min but can go for up to 3 hrs due to stoppages in which only about 15min of actual action has happening ?

Comparing NRL:
13 players, 4 interchange (usually only the forwards)
2 x 40min Halves (no standing around) were each team smashes the other.