All Blacks skipper Kieran Read has given himself the all-clear to be one of them, despite the workload involved in starting three tests against Wales in his new leadership role.
But which of the two teams' All Blacks start the match remains to be seen. The Crusaders will have eight All Blacks available; Read, Codie Taylor, Wyatt Crockett, Joe Moody, Owen Franks, Luke Romano, Sam Whitelock and Israel Dagg, the Chiefs' seven; Nathan Harris, Brodie Retallick, Sam Cane, Tawera Kerr-Barlow, Aaron Cruden, Seta Tamanivalu and Damian McKenzie.
Crockett is likely to start at loosehead prop ahead of Moody, who started all three tests, but apart from Read, the Crusaders' other All Blacks started a maximum of only two.
For the Chiefs, a question mark surrounds the fitness of first-five Cruden, carried from the Westpac Stadium pitch with a neck injury during the second test, but apparently close to being fit to start.
Lock Retallick and flanker Cane both got through a lot of work against Wales and will be Rennie's main concerns.
Read said getting re-acquainted with the Crusaders' calls and game plan was the hardest task. "Your mind starts whirring around again trying to remember all those calls from four weeks ago; you've got all the All Blacks calls in your head still," he said. "So that's probably the toughest thing, but after a couple of days running around with the boys it starts to come back pretty quickly.
"The body is in good shape, it's always sore after test match footy but I'll make sure I look after it for the next couple of days and be ready to go on Friday."
NZ teams' Super standings
Crusaders (1st overall) 45
Chiefs (5th) 42
Hurricanes (6th) 40
Highlanders (7th) 38
Blues (11th) 30
Chiefs' next matches: Reds (away), Highlanders (away)
Crusaders' next matches: Rebels (home), Hurricanes (home)