Chiefs prop Ben Afeaki is in a race against time to be cleared to play in his team's Super Rugby semi-final next weekend in Hamilton.
Afeaki has not played for seven weeks after he suffered from a bout of concussion against the Blues on his provincial home ground in Albany on June 2.
The North Harbour prop has returned to training after not being able to for the last five weeks.
Before his concussion the prop missed 13 weeks of Super Rugby this season with a broken arm which he suffered in the season opener back in February.
"It's been tough," said Afeaki of his concussion symptoms.
"I've been getting a bit of nausea, a little bit of dizziness in the mornings and that."
However he is now back in training and is getting back to normal according to Auckland specialist James Cunningham.
"Hopefully I'll be back on the field soon," Afeaki told Fairfax NZ News.
"At least I'm able to get back into training now and get my fitness back."
Afeaki is hoping that two weeks of solid training will be enough for him to be considered for selection in the Cheifs Semi-final.
"I need to get around taking some head knocks and doing a bit of contact again for me to be able to be eligible. "
"We have quite physical trainings during the week so if I can get through them then maybe I'll have a chance, but if not it's probably not worth it and I'll be looking to try and contribute somewhere else really."
That means that he will have to turn his preparation to North Harbour's ITM Cup campaign and possibly making his comeback there.
"It's a terrible injury and you can't do anything about it really until it clears."
is hoping that he has retained some base fitness while he has been out
Even though Afeaki has been out of action for almost two months he has only missed three matches as his injury came just before the three-week international window.
"But it's still very frustrating as I haven't played much rugby at all, especially after my first injury as well, but I still feel part of the team and it's good to be around the boys still," Afeaki said.