NSW Country Origin halfback Jarrod Mullen is free to play in Friday night's clash with City if he enters the early guilty plea to a dangerous throw charge.

Newcastle's Mullen received a grade one charge for a tackle on Kevin Proctor in Saturday night's 42-12 NRL thrashing by Melbourne.

He will escape a ban with the early plea and miss one match if he unsuccessfully defends the charge at the judiciary.

Mullen was selected to partner Jamie Soward in the halves for Country in the Blues State of Origin trial in Albury.

Sydney Roosters forward Nate Myles received an identical charge for a tackle on Gold Coast's Greg Bird during Saturday's 24-13 loss at Skilled Park.

Myles will also escape a ban with the early plea and miss one match with an unsuccessful defence.

Knights under-20s prop Josh Ailaomai has had a contrary conduct charge referred directly to the judiciary after he was sent off for striking referee Jon Stone in an NYC match.

The serious treatment comes after Stone said the 115kg youngster had raised his elbow in a collision with the whistleblower after Ailaomai had been penalised for offside during a loss to Melbourne on Saturday.

Meanwhile, Manly forward Anthony Watmough (shoulder, ankle, wrist) is considered a slim chance of being available for Monday night's clash with Canberra at Brookvale Oval after he was ruled out of the City side.

Co-captain Jason King will miss the match with rib cartilage damage, with the club awaiting the results of scans to determine how long he will be on the sidelines.

In better news for the Sea Eagles, backs Brett Stewart (hamstring) and David Williams (knee) should both be available to take on the struggling Raiders.

"It's feeling better than it has for weeks and at this stage I think I will play," Stewart told the club website.

"I have another week of treatment and training but I have learned with this type of injury that things can change.

"Fingers crossed. I am eager to get back on the field and do my bit for the team."

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