Maroons winger Selywn Cobbo won't play against the Sharks on Saturday, but Corey Oates (knee) will bolster the Broncos' stocks in his own injury return.
Walsh will be assessed on Saturday after flying straight to Sydney from Adelaide while NSW prop Payne Haas, Patrick Carrigan and Tom Flegler, who escaped suspension for a high shot in Wednesday night's Queensland win, are keen to play.
"Selywn, we'll spell him, he hasn't come up too well," Walters said of the winger who hobbled off late in the second half.
"We'll take Tristan down for coverage; we know he's very capable from his performance last week.
"(Walsh is) just a bit sore, they were a bit rough with him.
"Being his first Origin as well; he did some really good things for Queensland, we just have make sure he's right to go for us."
The coach wasn't surprised by Walsh's performance, the 20-year-old defying the Blues' attempts to rattle him under the high ball.
"It was spoken about all week; not like he didn't see it coming," Walters said.
"He's a tough little player ... they're all very keen to put the Broncos jersey on."
Walters expects Sharks playmaker Nicho Hynes to be firing on all cylinders after being used sparingly in his Blues debut.
"He'll be looking forward to getting into his club colours," Walters said.
"They're a good side; their stats are very good too. Going to be a good contest for us."
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