The Kiwis hope to circumnavigate UK authorities and have appealed to Drug Free Sport NZ to treat Thomas Leuluai's groin injury with a drug the UK Anti-Doping agency prohibited them from using.
Leuluai injured his groin in the team's first training session after arriving in the UK and, while scans have cleared him of major damage, hasn't played any part in the World Cup to date.
That looks set to change tomorrow morning (NZT), with the 28-year-old likely to play against Papua New Guinea in Leeds after taking a full part in training overnight. He wasn't originally named in the 19-man squad to play their final pool game but coach Stephen Kearney is eager for Leuluai to test his injury and get some valuable game time ahead of next weekend's quarter-final.
Leuluai received a cortisone injection for his osteitis pubis injury a fortnight ago but it didn't work as effectively as hoped.
The Kiwis medical staff were then keen to give him a dose of prednisone, a synthetic corticosteroid used to treat inflammation and help with pain management. Given Leuluai is subject to routine drug testing, they had to apply to the UK Anti-Doping agency to use prednisone but it was turned down.