Former Bulldogs football manager Garry Hughes will begin legal proceedings against the National Rugby League club this week.

Hughes' decision comes on a day when three Penrith players were stood down for disciplinary reasons.

Hughes was sacked by the `Dogs on Thursday, making him the first casualty of the sex scandal which has engulfed the Belmore-based club.

Bulldogs chairman Dr George Peponis said Hughes had been dumped for "failing to enforce the club's code of conduct and for not acting in players' interests".

Graeme Hughes confirmed his brother, who has been associated with the Bulldogs for more than 30 years as a player and official, would commence legal action over his dismissal.

"He confirmed to me that legal proceedings will unfold some time this week," Graeme Hughes said.

"He's taken advice and the advice is strong. It will probably begin late this week."

Meanwhile, Bulldogs halfback Brent Sherwin is set to appeal the $5,000 fine he received from the board.

Sherwin and Test forward Willie Mason were slapped with fines over what the club considered inappropriate dress when they attended police interviews at the Sydney Police Centre earlier this month.

Mason was fined $10,000 while several other players were given suspended $5,000 fines.

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