Saracens have announced that Brendan Venter is to return to South Africa for family reasons, relinquishing his post as director of rugby.
Venter will continue to work at the club in the newly-created position of technical director, making frequent visits to London to fulfil his duties.
The change will take effect from January 9 with Mark McCall, currently first-team coach, promoted to the role of director of rugby.
The reshuffle is completed by Andy Farrell's elevation to first team coach.
Saracens chairman Nigel Wray said: "Brendan, Anneme and their children are returning to South Africa in January for family reasons.
"As a club very much based on family values, we respect their decision and wish them well.
"Mark and Andy will take over the day-to-day running of the team, but Brendan will remain an integral part of the club, as technical director, making frequent visits to north London."