Toulon owner Mourad Boudjellal admits he is desperate to keep Jonny Wilkinson at the club, whatever the cost.
Wilkinson's contract with the Top 14 leaders ends in the summer, and the former England fly-half is expected to announce his plans for the future in March.
The 2003 World Cup hero is being talked of as a potential member of the Lions squad for the tour of Australia and the 33-year-old could decide that would be a fitting way to finish his stellar career.
But Boudjellal said: "I'd sign him for four years if he wanted to.
"He knows that if I extend it, it's not for bad reasons. It's just that he's an excellent player. Only he can say, it's he who decides."