Another All Black exits Clermont
The 32-year-old opted not to take up an option for a fifth year in France.
"If I want to carry on playing it will not be here," the Sports Auvergne media portal quoted Stanley, who has three international caps with the All Blacks, as saying.
The Australian-born Stanley came to the club in 2012 and his four-year deal runs out at the end of this campaign, albeit he had the option of agreeing a one-year extension.
Clermont, leading the way in Top 14 this season and on the verge of a European Cup quarter-finals berth, have already seen All Blacks wing Hosea Gear join Lyon on a short-term deal after the 32-year-old failed to hold down a regular place in the side.
Lyon want Gear to make up for the absence of injured quartet Franck Romanet, Pacific Islander Napolioni Nalaga, Henry Clunies-Ross and Fijian Jone Tuva.
Agence France-Presse
