Catalan forward Julien Bousquet has been ruled out of their Challenge Cup quarter-final against Hull after being handed a three match ban.
Bousquet, 21, was found guilty of making a reckless tackle on Scott Wheeldon during the win over London last weekend.
The Frenchman, who was also fined £300, would also miss the Challenge Cup semi-final, should the Dragons see off Hull in Saturday’s BBC televised match.
He was previously banned for four matches earlier this season for a dangerous tackle on Salford’s Theo Fages.
After the match, Giants head coach Paul Anderson criticised the match officials.
He said: “It’s a straight shoulder charge straight to the head. He wasn’t knocked out for no reason. There are five people out there – one with a whistle, two with flags and two muppets stood at the other end of the field – and they don’t see anything. And nothing will get done about it.”