Fourie turned the tide of the 2009 series against the Lions when he crossed for a crucial try with just minutes remaining of the second Test in Pretoria late last month.
The 26-year-old supplied a world-class finish to bring the Springboks back into the match at Loftus Versfeld, paving the way for Morne Steyn to break the Lions' hearts with a last-minute penalty that would clinch the three-match series.
Fourie currently plays his domestic rugby with Super 14 outfit the Golden Lions, with whom he is under contract until October of 2010, but Clermont Auvergne's vice-president Jacques Pineau has claimed a deal to bring the player to Europe is almost complete.
"There is an agreement between the club, the player and his agents. I think his arrival is going to happen," Pineau said in French publication L'Equipe.