Toulon president Mourad Boudjellal says Duane Vermeulen will leave the French club at the end of the season.
Cheslin Kolbe put Wandile Mjekevu away for a try during Toulouse's 11-10 loss to Pau.
La Rochelle relinquished top spot after being held to a 38-38 draw by bottom-feeders Oyonnax, while Agen, Brive, Bordeaux, Montpellier, Pau and Racing 92 won in the Top 14.
Loosehead prop Albertus Buckle scored a 23m try during Lyon's 35-23 win over Pau.
Brive beat Montpellier 29-10, while La Rochelle, Racing 92, Stade Français, Toulouse, Lyon and Castres also secured wins in the French Top 14.
SARugbymag.co.za looks at the weekend’s English Premiership, Pro14, French Top 14 and Japanese Top League matches involving South African players.
JP Pietersen dived over to score during Toulon's 49-25 win against Oyonnax in the French Top 14.
Oyonnax couldn't stop Marcel van der Merwe from close range during Toulon's 49-25 win.
Johann Sadie scored a try in Agen's 27-13 win over Brive in the French Top 14.
Agen v Brive
Bordeaux v La Rochelle
Castres v Stade Francais
Montpellier v Lyon
All the warm-up matches leading up to the 2018 Super Rugby tournament.
A comprehensive list of Super Rugby player transfers ahead the 2018 season.
Before you make your Superbru picks for Saturday's Pro14 game in Port Elizabeth, take a look at the SA Rugby magazine team's predictions.
Maxime Machenaud's boot helped Racing claim a 34-30 win at the U Arena.View all videos