Brisbane winger Denan Kemp had to rush back to hospital on Monday after being told his lung had collapsed as a result of a horror injury suffered against the Warriors on Sunday afternoon.

Kemp sustained three broken ribs, one displaced rib and a collapsed lung after copping an accidental knee from Warrior Jerome Ropati midway through Brisbane's 48-16 loss.

He was taken from Suncorp Stadium to hospital on Sunday for x-rays and kept overnight for observation before being released on Monday morning.

"I had x-rays on Sunday and when I was released on Monday I was told to get some scans to check my kidneys and liver," a groggy Kemp told AAP from his St Andrews' hospital bed.

"I had a CT (CAT) scan and they said I should get myself to hospital straight away because my lung had collapsed."

Kemp's initial prognosis of three to four weeks out has now been revised to 8-10 weeks but he's hoping to be back earlier if his ribs heal.

Kemp showed amazing toughness to keep playing and trying to make tackles, including one on Warriors abrasive winger Manu Vatuvei before he slumped over the sideline.

"I was really struggling to breathe but I didn't want to come off, I knew Izzy (Israel Folau) had gone off and I tried to stay on as long as I could," said the 82kg winger who earned coach Ivan Henjak's admiration with his courage.

"They've had to drain some air and re-inflate the lung, it's pretty painful but I am drugged up so it's not too bad."

Kemp's latest injury has opened the door for young Redcliffe junior Mitch Rivett to make his NRL debut off the bench.

Henjak, who is sweating on the fitness of a few of his players, most notably lock Matt Gillett, named an 18-man squad to play the Roosters on Friday night, which included two forwards - Ben Te'o and Alex Glenn - as his starting centres for injured duo Justin Hodges and Israel Folau.

Rivett was named on an extended five man bench. Ashton Sims gets his first start of the season in the second-row with youngster Gerard Beale moving out to the wing to cover for Kemp.

With former Parramatta halfback Tim Smith taking an offer from Cronulla, scrum prospect Ben Hunt has also won a spot on Henjak's bench.

"It's the situation we're in and we've had to come up with a team and I think it's a pretty good team, Henjak said.

"I'm happy to be going into a game with those guys."

Henjak admitted his players need to "toughen up" after being shown up by the physical Warriors.

"We had to make some changes at the weekend and we had two tries scored against us when guys were down which didn't help our confidence," he said.

"But we need to be tougher than that, we need to overcome those hurdles."

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