Kenny, a grafting prop who could only dream of the type of contracts being thrown at former Bulldog Williams, also said the NRL risked young fans turning to other sports if they didn't stop high-profile players jetting off to European rugby clubs.

Kiwi international Williams has sent shivers down the spine of rugby league by joining Mark Gasnier in the rush to pocket the cash being offered by French union.

Williams walked out on a five-year contract with the Bulldogs to explore a deal with second division side Toulon, stunning his club and team-mates with the shock decision.

"To a lot of the fans it is (damaging). Sonny Bill is a favourite players to a lot of the kids out there. The fact he's not going to be wearing a Bulldogs jersey or playing league anymore means a lot of young kids are going to be disappointed and turn away from the game. That's very damaging for the game," Kenny said.

Kenny juggles a career as a physiotherapist with his footballing duties, a far cry from the luxurious lifestyle Williams has come to enjoy thanks to his $400,000-a-season deal with the Bulldogs.

The 26-year-old said the money would continue to tempt the sport's best and brightest overseas unless the NRL devised a way to inject more cash into the local game, or dramatically boss the incentives to stay on Australian soil.

"You see these days a lot of guys are just leaving for money. There's been a lot said in the media lately about trying to get the players more money to stop the exodus," Kenny said.

"That's something we'll have to address and there will have to be changes because it seems more and more players are doing that. And a lot of our high-profile players as well. With each time a Gasnier or Sonny Bill leaves the game, we're losing fans with that as well."

He said if there was a positive lurking in the midst of the Sonny Bill saga, it may be that his shattering departure could spark the NRL into some decisive action.

"Maybe that's the one positive thing that could come of all this. It might make people stand up and take action on what's happening," Kenny said.

Kenny returned early from an ankle injury against the Sharks on Friday night and will be back in action when the Broncos host the dangerous Raiders on Sunday afternoon.