Williams's highest honour with Toulon was finishing runner-up in the 2009-10 European Challenge Cup . On 6 June 2009 he played for the Barbarians in a tour match against Australia .  His contract with Toulon ended in June 2010; in the same year Toulon reportedly tabled a three-year, $6 million offer to Williams, while the New Zealand Rugby Union (NZRU) came up with a $550,000 per year deal. He was also offered the French number twelve jersey at the 2011 Rugby World Cup.  Williams rejected Toulon's offer—reportedly the largest in rugby union history—and opted to sign with the NZRU in a bid to play for the All Blacks.  He then chose to play with Canterbury in the ITM Cup and the Crusaders in the Super Rugby competition.