The Bulls on Monday confirmed reports that assistant coach Pieter Rossouw will leave at the end of the season.
The former Springbok wing, who has served as assistant coach since 2008, will be pursuing business interests elsewhere when his contract expires at the end of the current season.
Bulls coach Frans Ludeke said that "Slaptjips" was of great value to the team over many years, with many players becoming international stars under his tutelage.
"Pieter has played a valuable role in shaping our backline play and general ability on attack," said Ludeke.
"The trophies and tournaments we have won with him on board and the number of tries we have scored speaks for itself and will always be a great testimony of his contribution to the Vodacom Bulls cause. We thank him for that. I know that Pieter will be successful in future endeavours as well."
Blue Bulls Company CEO Barend van Graan confirmed that the process of appointing a successor has already started.
"We have a number of candidates that we are looking at and will make the necessary announcements when contracts are in place, no further comments will be made until such a time."