Toulon fly-half Jonny Wilkinson is set for minor surgery on an "inflammation of the pelvic area" this Saturday, which rules the veteran out for one week.
His club said that Dr. Gilles Roboul will conduct the operation in Bordeaux, with Wilkinson only expected to miss the clash with Mont-de-Marsan.
Wilkinson was a starter in Toulon's Heineken Cup defeat to Montpellier on Saturday but had to leave the field for a spell in the first half with a cut lip.
In other injury news from Toulon, former Springbok lock Bakkies Botha has returned from South Africa where he was recovering from surgery to a fractured cheekbone. I is expected back on the field early February.
Scrum-half Sébastien Tillous-Borde is not yet ready to return to training but is recovering from blood poisoning suffered in December.