Harlequins have signed Australian forward Luke Williamson from Manly on a two-year contract. Harlequins coach Brian McDermott said: Ã¢Â€ÂœLuke will bring a fair amount of grunt blended with the ability to play a bit.Ã¢Â€Â Williamson, released from the last 12 months of his Manly contract, joins fellow Australian Chad Robinson at the Twickenham Stoop with Quins also set to re-sign CastlefordÃ¢Â€Â™s Luke Dorn. Celtic Crusaders have been linked with a move for French international Julien Rinaldi. French club Toulouse Olympic, overlooked for a place in next seasonÃ¢Â€Â™s expanded engage Super League, have accepted an invitation to play in the Co-operative National League. The Rugby Football League will provide financial help to Toulouse and the other National League clubs to aid their travelling costs. Huddersfield are expected to sign Todd Carney, the 22-year-old Canberra half-back who was sacked after a number of alcohol-fuelled incidents. St Helens forward Mike Bennett, who re-injured his shoulder in May, has retired.