The fallout over North Queensland's 2010 NRL clash with Canterbury has been hard to forget.

But barely 12 months after the game, Cowboys coach Neil Henry needed to jog his memory as his side again prepared to face off with the Bulldogs on Friday night.

Four men - including ex-Bulldogs prop Ryan Tandy - have been arrested by detectives investigating suspect betting activities on the Cowboys-Bulldogs match on August 21 last year.

However, Henry cut a reporter off on Thursday when last year's "controversial" match was mentioned, saying: "Why was that?"

But it quickly came flooding back for the Cowboys coach, who admitted he had been "bewildered" by the betting scandal that erupted after the match.

His comments came after it emerged a 38-year-old man had been charged on Wednesday with two counts of attempting to obtain financial advantage by deception over the game.

Henry was a staunch critic of players betting on games but did not believe he had anything to worry about.

"I don't think it has anything to do with the (current) players," he said.

"I remember talking to (then Bulldogs coach) Kevvie Moore about it when we got together - we were a bit bewildered by the whole thing."

Detectives may still be investigating the match but to Henry the matter was closed.

"Obviously some people have been charged around it, and that is something we want to eradicate from our game," he said.

"We are clear about the rules, there is no betting from our players or anyone involved in the game, coaching or working in the organisation.

"It's been dragged on a bit, 12 months now basically since that happened.

"We've been through the process of the investigation which came up here, I have spoken to them (detectives), some players spoke to them, and that's been the end of it.

"I don't think it has any relevance to this game."

Henry looked forward to the next two games, with the Cowboys farewelling Bulldogs captain AndrewRyan, who announced this week that he would retire at season's end.

The Cowboys will also take on the Broncos next round - a match in which skipper Darren Lockyer will notch a record 350th NRL game.

"He (Ryan) has been fantastic for their club for a number of years - he's a great clubman, a great captain," Henry said.

"I think every game we have there is something happening, whether it's Locky's 350th next week or Bobcat (Ryan) retiring.

"But we just have to go out there and play footy."

The Cowboys will travel to Sydney with Scott Bolton on standby for Matt Scott (back) and Will Tupou, who looks set to replace flyer Kalifa Faifai Loa (hamstring).

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