NRL Head Coach Trent Robinson has updated his squad to 19 men ahead of the Grand Final tomorrow night at ANZ Stadium.

Nat Butcher and Sean O'Sullivan will both come out of the side.

Lindsay Collins remains in the running to line up, while Cooper Cronk is still fighting to be fit for kick off.

The rest of the line up remains unchanged, with the final 17 man side to be named one hour prior to kick off.