North Queensland's Glenn Hall has been cleared of spitting by the NRL match review committee.

The only two players charged from round 21 action were Canterbury's Jamal Idris and Wests Tigers Aaron Woods, but the pair will be free to play this weekend if they take early guilty pleas for careless high tackles.

Penrith halfback Luke Walsh complained to referees in the 32nd minute of Saturday night's loss to the Cowboys that Hall spat on him but said he did not want to make an official complaint.

"We contacted the Penrith club and we were told that Luke Walsh said he didn't want to put in a report on the matter," match review commissioner Greg McCallum.

"We also got additional camera angles which showed Glenn Hall in frame the whole time and that he was about five or six metres away from where the incident was.

"We saw no evidence that he spat at him."

Also ruled to have no case to answer were Manly's Kieran Foran and Brisbane's Corey Parker after they made contact with referees during their games on the weekend.

"We felt that on both occasions that the referee got between the player and where the players were heading," McCallum said.

"But it was done at the last minute and there wasn't a period of time where the player would have had a view of the referee ... we felt that both Kieran Foran and Corey Parker made an effort to minimise the contact."

The Bulldogs Frank Pritchard was also cleared after he was controversially placed on report in Saturday night's narrow loss to Sydney Roosters.

Pritchard was penalised for coming down with his forearm on the head of Roosters forward Jason Ryles when the Bulldogs were leading 24-22 with less than a quarter to go at the SFS.

A Canterbury scrum feed was ordered for a Ryles knock-on but the video ref overruled the on-field officials and sent the message down that Pritchard had made illegal contact.

Todd Carney slotted a penalty goal to square the ledger before the Roosters went on to win 32-28.

Idris will be free to play for Canterbury against the Cowboys on Friday night if he takes the early plea to a careless high tackle charge for his hit early in the first half on the Roosters Anthony Minichiello.

Woods was charged for his hit on Manly's George Rose in the 47th minute of last Friday's victory over the Sea Eagles.

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