Toulon's New Zealand backrower Sonny Bill Williams will be out of action for three weeks after picking up an injury in French club rugby at the weekend.
The 23-year-old, who controversially joined the French Top 14 team from the Canterbury Bulldogs National Rugby League club last month, was hurt during Saturday's draw with Brive.
Williams sparked a media storm when he left Australia mid-season to switch codes and play in Europe despite being contracted with the Bulldogs.