Sea Eagles back-rower Anthony Watmough is in doubt for Australia’s Test against New Zealand next month due to an elbow injury.

Manly back-rower Anthony Watmough is in doubt for next month’s Anzac Test after badly injuring his elbow in the Sea Eagles’ controversial win over North Queensland on Friday night.

Watmough has been battling the problem for several weeks and went into the round-seven NRL clash with his left elbow heavily strapped.

He aggravated the injury in an attempted tackle on Cowboys centre Brent Tate shortly before halftime in Manly’s 26-21 win at Central Coast Stadium.

The 30-year-old didn’t return to the field for the second half.

“He has been carrying it for a while and I think he has inflamed it,” Manly coach Geoff Toovey said.

“We will have to wait and see how it is on Monday.”

An extended stint on the sidelines would be a cruel blow for Watmough who was forced to sit out last year’s end-of-season World Cup in England due to a knee injury.

Kangaroos coach Tim Sheen said last week Watmough was very much in contention for a spot in the Australian side to play New Zealand at Allianz Stadium in two weeks.

The injury to Watmough and injury clouds over Paul Gallen, Luke Lewis and Sam Thaiday could open the door for Brisbane lock Matt Gillett to make his international debut.

Cronulla duo Gallen (ankle) and Lewis (shoulder) have been sidelined for the Sharks and are expected to return against Penrith next Saturday.

It leaves little time for the decorated duo to impress Sheens with the Kangaroos side to be named the day after.

Thaiday missed Brisbane’s 32-6 thrashing of Newcastle on Friday with a calf injury.

Gillett has been a key player in the Broncos’ 4-3 start to the year and Sheens said last week the 25-year-old was in the mix for a Test berth.

“I think how the Broncos have gone with their early-season form, Gillett has been very good,” Sheens said.

“Young Gillett was very unlucky not to go (to last year’s World Cup). So he’s really started this season on fire, so I think there’s going to be a lot of selection headaches for me.”

The closest Gillett has come to playing for Australia was when he was chosen as an 18th man in 2012.