Despite the referees being dropped, Furner said the damage had already been done by two contentious no-calls which resulted in injuries to Raiders players Blake Ferguson and Jack Wighton.

The Raiders are angry that Newcastle's Danny Buderus was not penalised for an apparent shoulder charge on Ferguson. Ferguson has a fractured eye socket and is expected to be out for three to four weeks.

Raiders winger Wighton also suffered a wrist injury when he was knocked to the ground awkwardly by Knights winger Akuila Uate while contesting a bomb.

Wighton has been cleared of a broken wrist but is recovering from bone bruising and has been named to play against the Roosters at Canberra Stadium on Sunday night.

"I don't care what anyone says, had it been Blake Ferguson shoulder charging Danny Buderus, it would have been a penalty at Newcastle Stadium,'' Furner said.

"Likewise Jack Wighton being taken out in the air with Akuila Uate, had it been reversed, had one of our players taken out [ theirs], we would have been penalised.

"It [injuries] compounds it and makes it worse, the reality is they were two penalties which should have gone our way that didn't.

"You don't go up to Newcastle expecting to get 50-50 calls, but we have mandatory penalties that should have been awarded, not awarded.

''They've come out and dropped the referees, but it doesn't help.

''I don't know how a penalty could not have been awarded when it's [the shoulder charge] been a hot topic all year.''

NRL referees boss Daniel Anderson attended the game and has spoken with Raiders officials.

Anderson did not return calls, but it's understood he has expressed disappointment in the performance of the two on-field referees.

Neither Buderus or Uate were penalised or cited on Monday.

The NRL released its match review findings on Tuesday afternoon.

In relation to the Buderus incident, the report read that the Newcastle hooker had: ''in attempting a shoulder charge, made contact with his shoulder/upper arm to the body of Blake Ferguson. Minor clash of heads, further contact was made from the arm of [Knights forward] Neville Costigan to the head/neck of Blake Ferguson who was dropping. Could have been penalised.''

The report stated it did not believe the Wighton incident warranted a penalty. ''Akuila Uate made contact with his shoulder to the hip of Jack Wighton, who was in the air competing for the ball. No further action.''

Raiders coach David Furner was fined $5000 for questioning the integrity of referees after a loss at Manly last year, but is particularly unhappy at the Buderus incident.

''I'm extremely disappointed something like that could be missed,'' he said.

''There's been a lot said about shoulder charges and player safety, and now I've lost a player after an incident there which was a shoulder charge and not acted on.

''It's cost the two referees first grade [spots] but I could lose a player anywhere up to six or eight weeks.''

Ferguson met with a surgeon on Wednesday morning, and it was anticipated he would be back in three to four weeks.

Ferguson could have been sidelined for up to eight weeks if he'd required an operation.

The Raiders have other injury concerns from the match.

Winger Sandor Earl (hamstring) and hooker Glen Buttriss (shoulder) also remain in some doubt for the crucial clash against the in-form Roosters.

Buttriss said he was confident of playing after his injury responded well to treatment this week.