NSW centre Josh Morris has broken down at training and could be ruled out of State of Origin II.

Morris damaged his leg during training in camp at Coffs Harbour away from television cameras and media.

The Blues camp tried to keep the incident quiet but The Saturday Telegraph was told the Canterbury centre is in doubt for Wednesday night’s massive Suncorp Stadium game.

NSW coach Laurie Daley reluctantly confirmed the injury and said NSW’s medical staff would assess Morris.

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If Morris’ injury worsens, he could be ruled out as early as Saturday.

Morris broke down at training and is in serious doubt. Source: News Corp Australia

Morris’ potential withdrawal would be another blow to a NSW squad already in pain from losing back-rower Wade Graham this week to suspension.

Daley remains confident his right-centre will still play but is closely monitoring the injury, which he sustained on Thursday.

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The Blues had Friday off and they used the day to rest and recover.

Replacement candidates include Joey Leilua, Jack Bird and James Roberts.

Leilua was originally going to be named as one of NSW’s development players before Canberra coach Ricky Stuart rejected the approach.

Joey Leilua is being considered as a possible replacement. Source: News Corp Australia

Josh Dugan, returning from an elbow injury which ruled him out of Origin I, is unlikely to play for St George Illawarra in tonight’s match against Melbourne in Wollongong, ending any chance of replacing Morris.

Dugan is more likely to return against Newcastle next Saturday at Hunter Stadium.

“I will see Josh (on Saturday) and we will then have a better indication,” Daley said.

“We’ll see how he’s travelling. If he’s no good (today) he’ll be ruled out but if he looks like he’s going to be all right, we’ll give him time. I am pretty confident he will be all right.

“He only hurt it yesterday. He seems to be okay at the moment but we’ll just see how he goes.

“We will see how he pulls up. I spoke to Josh this morning and he seems to be all right but we will still have to wait and see.”

NSW will train in Coffs Harbour on Saturday and Sunday.

Once the Sunday session has been completed, the Blues will board a charter flight from Coffs Harbour to Brisbane.

The team will have Monday off before a final captain’s run on Tuesday at Suncorp Stadium ahead of Wednesday night’s big game.

NSW would rush a replacement into camp as quickly as possible should Morris be ruled out.

Morris, 29, has been a mainstay in the NSW side since 2009. The former St George Illawarra star has managed to shutdown Queensland star Greg Inglis during eight years of Origin tussles. NSW must win to keep the interstate series alive.