Penrith coach Ivan Cleary has warned against making knee-jerk changes to the NRL rulebook after the career-ending injury to Newcastle back-rower Alex McKinnon.
McKinnon could be facing paralysis after a lifting tackle during last month's game against the Melbourne Storm resulted in him being carried from the ground with abroken neck.
The Knights criticised the NRL match review committee on Thursday for singling out Storm player Jordan McLean for his role in the three-man tackle, saying brothers Jesse and Kenny Bromwich should have also faced a judiciary hearing.
There have also been calls from medical experts to ban lifting and third-man tackles, something Cleary is not convinced could be implemented or would be for the long-term good of the sport.
"I'm not going to make any comment [on the Knights' statement]. It is an extremely sensitive issue and there has been too much said about it already," Cleary said.
The NRL has made a series of rules changes over the past two years and Cleary acknowledged outlawing the shoulder charge and the cannonball tackle was a good thing.
But he said continuing to tinker with the game year after year was not a good approach.
"Every time we make a change to the rule the game changes again," he said.
"Players and coaches have to adjust to that. But it's already a great game.
"It's not too bad this year ... but we always have to be mindful that if you make too many changes it takes a while for everyone to get used to it.
"By mid-season everyone is flowing nicely, then next season things are changed again and we're back to square one ... we have to be mindful of that."
