The 26-year-old lock has played almost 80 games for the club and scored five tries since joining from the DHL Stormers ahead of the 2020/21 season.
He played a key role last year as Sale reached the Premiership final, and this season he has featured a further 13 times for Alex Sanderson’s side.
Head coach Alex Sanderson said: “Cobus will be missed by all of us on so many levels. He’s the most polite and courteous of people off the field, but the most wildly excitable man on the field, and on a night out.
“To say Cobus wears his heart on his sleeve is to do him a disservice with regards to his emotional commitment for which his body has paid the price on occasion.
“He leads by example and has earnt the respect and adoration of the group both on a professional and a personal level. We wish him every success and happiness with his move back home.”
𝙏𝙝𝙖𝙣𝙠 𝙮𝙤𝙪 𝘾𝙤𝙗𝙪𝙨 🤝
It's with a heavy heart the club will be saying goodbye to Cobus Wiese at the end of the 2023-24 season 😢.
After almost four dedicated years in the Sharks jersey Cobus is heading back home 🇿🇦
Read more below 👇