The Ireland vs Samoa game will also be a special one for Irish midfielder Bundee Aki, who was born in Auckland to Samoan parents.
The 29 year old moved to Ireland five years ago and has played 22 tests for his adopted nation since 2017.
Manu captain Jack Lam said they knew Aki but would't be paying him any more attention than the rest of the Irish team.
"No special presents for him, he'll get the same treatment as everyone else. Most of the boys are pretty close with Bundee - a couple of boys have seen him during the week - so we're still friends off the field but once everyone crosses the line they're all the same," Lam said.
Aki played two seasons at the Chiefs alongside Samoan fullback Tim Nanai Williams before moving to Ireland in 2014.
He told Irish Rugby TV "it's a massive privilege" to play against his heritage and said his family were all behind him.
"I think they're just rooting for me and making sure I play well and rooting for Ireland as well. Look, I think my parents always said every time I play make sure I play with a humble heart, play to the ball and make sure you come out with no injuries and hope for the best result."
Bundee Aki expected the teams would be go after each other for the full 80 minutes but would be friends again after the full-time whistle.