Sironen was hurt in the Sea Eagles win over the Cronulla Sharks on the weekend and failed to finish the match.
At the time, Sea Eagles coach Trent Barrett said the injury didn’t look good.
It’s now being reported that Sironen will require surgery to repair the torn pec and will be sidelined for at least eight weeks.
Breaking: Curtis Sironen having surgery today for torn pec will miss at least 8 weeks @FOXSportsNews
— Steve Hart (@SteveHartFOX) June 26, 2017
Curtis Sironen suffered a pec strain, hoping no surgery (4mnths+ recovery). Pec injuries highly variable, gen guide:
— NRL PHYSIO (@nrlphysio) June 26, 2017