Toulon and Saracens are reportedly keen on recruiting Springboks tight-head Vincent Koch ahead of next season.
Reports from South Africa on Netwerk 24 say both clubs are monitoring his availability as they weigh up their front-row resources ahead of the 2016-17 campaign.
Koch, 25, missed out on a spot in the Springboks' World Cup squad but won two caps in the 2015 Rugby Championship. He plays his club rugby for the Pumas but turned out for the Stormers in last season's Super Rugby competition and reports suggest he is set to play for them again this year.
The same reports say Toulon are also monitoring Marcel van der Merwe's availability.
If either do make a move to France they will join fellow South Africa front-rowers Jannie du Plessis, Bismarck du Plessis, CJ Van der Linde, Heinke van der Merwe and Gurthro Steenkamp in playing in the Top 14.