Saracens have insisted that Brendan Venter remains "100% committed" to the club following his appointment by the Sharks.
Venter has been appointed director of rugby for the Sharks ahead of the forthcoming Currie Cup campaign, which starts on 9 August.
He was recruited by former Springboks team-mate John Smit, who is now the chief executive officer with the South African provincial side and has previously worked alongside Venter at Saracens.
Venter has been linked with the head coach's role with the Sharks after Smit announced that current coach John Plumtree will relinquish the job at the end of the season.
But Saracens released a statement insisting that Venter will continue to focus on his role as technical director with the Aviva Premiership club.
The statement read: "Brendan Venter remains 100% committed to his responsibilities as technical director at Saracens.
"The former Springbok has agreed to assist the Sharks provincial squad in Durban, but his ongoing role at Saracens is unaffected.
"Communicating with the coaches on a regular basis and travelling to north London at least once per month, Venter will continue to play an important role within the running of the club."