Deans admitted discarded veteran back Matt Giteau had the experience to also cover at No9 but wasn't being considered as a halfback option against New Zealand, who thrashed the Springboks 40-7 at the weekend.
Giteau trained briefly at halfback but has mostly been at five-eighths.
Fullback Kurtley Beale declared himself fit and ready to go after overcoming an ankle injury received against the Springboks.
Beale returned to training on Friday and reported he had pulled up well at the weekend.
"I think all the time we've given it has helped me out," he said. "It feels really good.
Brumbies prop Salesi Ma'afu, who has had a broken arm, won't come to Auckland but Deans said he was close to being available for the August 13 clash with South Africa.
Front-rower Benn Robinson remains upbeat about his slim chances of overcoming a ruptured anterior cruciate ligament in time for the World Cup.
- AAP