Selector Allan Smith says Nate Myles `should be right' to help Queensland seal a fifth State of Origin series whitewash over NSW.
The Manly prop's return from a knee injury would drastically change the winning Maroons' 17, with coach Kevin Walters contemplating an all-forwards bench for July 13's Origin III in Sydney.
Myles has not been named for Manly's Monday night NRL clash with the Dragons due to the injury that ruled him out of Queensland's series-clinching 26-16 Origin II win in Brisbane last month.
But Smith said Walters would monitor Origin veteran Myles before confirming their game three team in Brisbane on Monday.
"I believe he should be right," Smith told AAP.
"But Kevvie said he would get confirmation first thing tomorrow on who is fit or not.
"One thing for sure is Kevvie is not keen to take anyone in under an injury cloud and the situation we are in, you don't need to risk that."
Walters is contemplating injecting Myles straight into the starting line-up for game three, shifting his Origin II replacement Josh McGuire to the bench.
If Myles fails to prove his fitness, Smith said Walters would revert back to naming a replacement for injured bench utility Michael Morgan (knee).
Smith said selectors had kept the door open for Morgan to return from the injury he sustained in game two.
But after confirming Morgan would not play, Smith suggested Eels playmaker Corey Norman as a potential replacement.
"We received confirmation on Morgan today," Smith said of the Cowboys playmaker's game III status.
"But we are lucky to have players like Corey Norman available to play."
However, Manly's Daly Cherry-Evans appears to have the inside running.
Cherry-Evans played the last of his six Origins in game two last year.
"Daly is in the mix for sure. We have to make sure he gets through tomorrow night (against the Dragons) and is available," he said.
"DCE's form has been pretty solid the last few weeks and he is a quality player."
Queensland will monitor the fitness of Brisbane winger Corey Oates who was concussed in their 48-6 NRL record loss to Melbourne on Friday night.
Broncos prop Josh McGuire is clear to play game three with an early plea to a dangerous throw charge he received for a lifting tackle on Melbourne's Dale Finucane.
Possible Queensland game three line-up: Darius Boyd, Corey Oates, Greg Inglis, Justin O'Neill, Dane Gagai, Johnathan Thurston, Cooper Cronk, Matt Scott, Cameron Smith (capt), Nate Myles/Josh McGuire, Matt Gillett, Sam Thaiday, Corey Parker. Interchange: Daly Cherry-Evans, Jacob Lillyman, Aidan Guerra, Josh Papalii.