Centre Justin O'Neill, winger Sisa Waqa and five-eighth Ben Roberts are all out for the next month joining winger Matt Duffie (season) and centre Richard Kennar (16 weeks) on the sidelines.

Waqa will have an arthroscope on his ankle on Monday and will miss three to four weeks while O'Neill will consult a surgeon on Monday about a small crack in his ankle with his absence to be six weeks or longer.

Storm football manager Frank Ponissi said the club had "minimal" room in its salary cap to add a player but would not be forced into making a rushed decision despite being linked to a potential signings.

"We may look at bringing someone in but we still have until June 30 to do so," Ponissi said.

"We will see how Justin is, the report from the surgeon will be important, if he is out for longer that might change things.

"But we won't be rushed into any decisions."

Ponissi also said Waqa's surgery was going to happen at some point this season after he had carried an ankle problem in recent weeks.

"He could have continued on but we thought with the weekend off and a bye in a few weeks now was an ideal time for it," Ponissi said.

The Storm remains non-committal about chasing Benji Marshall with the Kiwi free agent still tipped to sign with a Sydney club.

The Victorian-raised Kennar would have become the third local to play for the Storm but he injured his hip while playing for Brisbane Easts.

Ponissi said young players Travis Robinson, Hymel Hunt and Kurt Mann were all in line to play next match as their backs are in short supply with Mann playing in the centres during a New South Wales Cup game on Saturday.

The NRL has a representative bye this weekend, the Storm will have Cooper Cronk, Cam Smith and Billy Slater in the Kangaroos side to face New Zealand in Sydney on Friday night while Jesse Bromwich, Tohu Harris, Kevin Proctor and Kenny Bromwich selected for the Kiwis.

Ryan Hoffman will play for City in the annual City v Country match on Sunday while Young Tonumaipea is in the running to play for Samoa in their test match against Fiji.

The Storm's next match is against Manly Sea Eagles at AAMI Park on May 10.