PERTH, AUSTRALIA - JULY 10: Mason Wood of the Kangaroos celebrates a goal with Lindsay Thomas during the round 16 AFL match between the West Coast Eagles and the North Melbourne Kangaroos at Domain Stadium on July 10, 2016 in Perth, Australia. (Photo by Paul Kane/Getty Images)

North Melbourne forward Mason Wood’s return from a hamstring injury has been further delayed, with the 23-year-old this week undergoing minor knee surgery.

Wood, who suffered a hamstring injury at training in February, will miss at least another three weeks of football.

“Mason was cleared to play in a VFL practice match on the weekend but felt some pain in his knee,” Roos General Manager of Football Cameron Joyce said.

“Scans revealed a tiny bone fragment floating in his knee joint that was unrelated to the previous hamstring injury. As a result, Mason underwent a minor arthroscope on Tuesday to wash it out.”

In some positive news for North Melbourne, Ben Brown and Majak Daw, who both pulled up sore after the weekend’s one-point loss to Geelong, have been cleared to play this week against Greater Western Sydney.