South African brothers Jannie and Bismark du Plessis are to leave Super 15 outfit Sharks and join the exodus toward France and the Top-14 with a three year deal at Montpellier.

Prop Jannie, 32, and hooker Bismark, 31, will join coach Jake White, who previously led the brothers and South Africa to the 2007 World Cup.

Some nine players from the Southern hemisphere are due to arrive at the club next season including Australian scrum-half Nic White, 24, and South African fly-half Demetri Catrakilis, 25.

White arrived at Montpellier in December and the club missed out on the playoffs for the first time in five seasons.