England head coach Eddie Jones is backing number eight Billy Vunipola to have the "game of his life" against the Wallabies in Melbourne.
Vunipola, who will go up against Rebels player Sean McMahon at the back of the scrum after David Pocock was ruled out, is key to England.
And Jones thinks that his player is set for a strong evening at AAMI Park, as England seek to wrap up the June series with a game to spare.
"I don't know how McMahon will go but I know how Billy’s going to go… He's ready to play the game of his life," he told rugby.com.au.
"McMahon's a good player, he's always impressed me.
"I can remember watching him as s youngster playing for the Australian Sevens in the Tokyo Sevens.
"He stood out by a mile. He was by far the best player.
"A couple of years later, he's playing for the Melbourne Rebels, he's done well for them."
Jones has this week included Elliot Daly amongst his replacements, with George Ford and Jack Nowell starting in what's now a six-two split on the bench. Daly, who offers a kicking option, should get a first chance to impress on tour and Jones revealed he is excited to see him.
"That's just the way we think the game’s going to go," he said.
"I think we've got enough flexibility going six-two with Elliot Daly on the bench, who covers a variety of positions, kicks goals from 50 metres, he's pretty handy on the bench.
"I just think that suits us this game."