Auckland - All Blacks and Blues lock Ali Williams's return to rugby will be delayed with news that he will require a third operation on his troublesome Achilles tendon.
Williams had been in rehabilitation from surgery after rupturing his right Achilles in a pre-season match for the Blues in January.
However, All Blacks doctor Deb Robinson said he had been suffering unexpected pain in recent weeks and a follow-up scan in Auckland on Thursday had revealed further damage to his tendon.
"The scan showed that, while the surgical procedure to connect the tendon to his joint remains intact, it has caused a partial tear further up his tendon," Robinson said.
As a result, Williams will require a third operation which will involve a reconstruction of the tendon.
Williams had been aiming to return to rugby in the ITM Cup but Robinson said he would now be out of action until the end of the year.
"It's obviously a frustrating and distressing time for Ali but throughout his setbacks over the last year he has remained optimistic about his situation and is keen to overcome his injuries and get back on the rugby field."
All Blacks Coach Graham Henry remarked: "Everyone involved in the All Blacks feels for Ali and we will continue to give him our full support as he goes through further surgery and rehabilitation."