The news has led to speculation the high-profile All Black will play his first representative match since his illness peaked in June as early the next fortnight.

Mayhew he was surprised Lomu had overcome his health problems so quickly that he was considering a return to the National Provincial Championship.

"When it was first proposed that Jonah might play for Wellington I thought his renal physicians would say 'no way'," Mayhew said.

"That's not the case. Their opinion is that as long as he follows the proper protocols there is no danger."

Mayhew said Lomu would be able to manage his dialysis treatments at Auckland Hospital around his playing schedule. He was expected to eventually begin home dialysis which would allow even greater flexibility.

Mayhew said there was "no medical reason I can think of" Lomu should not return to rugby.

"It may be he can't get up to his pre-dialysis levels of fitness," he said. "I'm hopeful he can. All I can do is give him my best advice and leave it at that.

"He's been training hard and he's fully fit. He may be a bit rusty in his rugby skills but that should be fairly easily overcome."