"It's one of those things you've just got to have a tolerance to pain and, at the moment, he would be in a fair bit of discomfort if he had to get tackled on it.
"Whether that changes before the game and he wants to play, I'll give him to the last moment."
Winger Antonio Winterstein would slot into the centres should Tate be ruled out, with Henry to decide between Kalifa Faifai Loa and Moses Pangai as the replacement winger.
Henry admitted Tate's loss would be a huge blow for the side, but backed Winterstein to handle NSW representative Idris.
"It is a bit of a blow. His experience will be needed out there," he said.
"(But) there's no point pushing him out there if he's underdone.
"... (Winterstein) did a good job in the trial.
"Tatey went off inside the first two minutes of the game, so I thought Antonio was pretty good on that edge when he went there and marked (Idris) fairly well."
Lui has trained in bursts with the team all week, sparking rumours he could replace youngster Ray Thompson at halfback to partner five-eighth Johnathan Thurston.
And Henry said if he did manage to make it through the team's final training run unscathed, Lui would come into contention for a spot - be it in the starting lineup or on the bench.
"I think if he comes through and he's really confident about it, I'd certainly have to consider him," Henry said.
