New Zealand's Dagg to undergo knee surgery ahead of Lions series

Crusaders have confirmed Israel Dagg requires minor knee surgery and is expected to be out for around six weeks.

The New Zealand international was injured in an enthralling 22-20 Super Rugby win over Queensland Reds last weekend and it was announced on Wednesday that he sustained posterior cruciate ligament and lateral meniscus damage.

Crusaders revealed that Dagg should be back in action late next month, which will be a huge relief to All Blacks head coach Steve Hansen ahead of the British and Irish Lions series.

"[Dagg] has been seen by a specialist who has recommended a small operation to assist his recovery," Crusaders said in a statement.

"He is expected to be ready to return to play in approximately six weeks."

Fellow New Zealand international Seta Tamanivalu is facing four weeks on the sidelines with a hamstring injury sustained against the Reds.