Durban - South Africa lock Johann Muller is to join Ulster following the completion of this year's Super 14, the Celtic League club announced on Wednesday.
Sharks captain Muller, 29, has agreed a two-year contract and will move to Belfast once the South African side's involvement in Super 14 comes to an end.
Muller has won 23 caps for the Springboks.
Sharks captain Muller, 29, has agreed a two-year contract and will move to Belfast once the South African side's involvement in Super 14 comes to an end.
Muller has won 23 caps for the Springboks.