Crichton out, Marky Mark in

Casey McLean will start for NSW in place of injured centre Stephen Crichton, while Dylan Lucas was named to make his debut in the second row after Haumole Olakau'atu was sensationally dropped.

Blues coach Laurie Daley finalised his line-up on Tuesday after calling up Sydney Roosters winger Mark Nawaqanitawase to replace Crichton, who has been battling an AC injury since early April.

Nawaqanitawase was named on the six-man interchange, with McLean shifting into the starting line-up at centre after a brilliant 23-minute cameo off the bench in Origin One after Tolu Koula was forced from the field with a concussion.

However, the most dramatic change was the axing of Olakau'atu, who remains in the squad as 20th man - a role filled by Lucas in Game One. Lucas will make his Origin debut in the second row alongside Hudson Young.

Prop Addin Fonua-Blake moves to the interchange to allow for the return of Broncos superstar Payne Haas, with Jacob Saifit not selected. 

Dolphins halfback Isaiya Katoa remains in the squad on standby for Mitchell Moses, who has been given until Thursday to prove his fitness.

Daley named a 21-man squad in alphabetical order on Sunday night before finalising his starting 13 and six interchanges on Monday for the June 17 clash at the MCG.

Moses was recalled after suffering a hamstring injury at training in the lead-up to last month’s series opener, but Katoa is also in the squad as cover.

Haas returns and Wests Tigers hooker Api Koroisau replaces the injured Blayke Brailey (broken arm) in the other changes to the side which beat Queensland 22-20 in Game One.

Moses hasn’t played for a month and missed Parramatta’s match against Canterbury on Monday, but he will take over the five-eighth role from Ethan Strange if passed fit.

With Katoa needing to return to the Dolphins for Friday night's match against Sydney Roosters if not required by the Blues, a final decision on Moses will need to be made by Thursday.

After leading the Bulldogs to a 14-12 win over the Eels on Monday, Crichton revealed he had only need a pre-game painkilling needle but not one at half-time, but Daley said he wasn't fit to play.

“There has been a couple of guys that have been carrying some slight niggles and injuries that we need to be on top of, and we need to be sure that they can train,” Daley said.

“Our first training session is on Wednesday, and that's always been a sort of an educational day rather than a heavy session, so you'd want them to participate in that but certainly by the Thursday you'd need to be 100 per cent, because you don't want to be taking guys in that are underdone.”

With Moses succumbing to a hamstring injury on the eve of the series opener, Strange made his Origin debut at five-eighth and the 21-year-old Raiders playmaker was one of NSW's best.

If Moses is out, Strange will again partner Nathan Cleary at the scrumbase with Katoa - the Tonga halfback - on the bench. 

"His [Katoa] best football is obviously in front of him but he's another leader at his club, and if he gets an opportunity, I'm sure that he won't let anyone down," Daley said.

"I like what he brings to a footy team. He has a great kicking game, his organisational skill is great, he digs deep into the line and he's good communicator - all the ingredients you need from a half."

Asked if Katoa was a player of the future, Daley said: "I think he's a player of the right now. I think that he could step in and play in the halves for NSW. We're very lucky to have him".

Haas replaces Knights prop Jacob Saifiti, who did not get on the field as the Blues produced the biggest comeback in Origin history to win 22-20 after Maroons fullback Kalyn Ponga was sent off.

"I think everyone's watched Payne over the last couple of years and seen how important he is to the Broncos," Daley said.

"His ability for a big man to play long minutes is quite remarkable. Actually, I don't think I've seen a front-rower who moves as well as him and he loves pulling on the NSW jersey, he loves being a part of this environment."

Brailey shared the hooking duties with Reece Robson in Origin One and added spark when he came on in the second half but Koroisau has played four Origins.

"He's been in the Origin arena before, he's a leader at his club and is a very experienced, very dynamic dummy half who gets through plenty of work," Daley said of Koroisau.

"Brails was very good in Game One, coming off the bench but I think Api's experience will be invaluable for us."

The Blues will go into camp on the Central Coast before travelling to Melbourne in a bid to wrap up the series. They have a meet and greet with local fans scheduled for 3.30pm Tuesday at Polytec Stadium in Gosford.