Second row Ire Herbst will be joining the quin’s side from a five-year stint at Italian club Benetton Rugby.
The 29-year-old emerged as a clear talent during his time with Blue Bulls in South Africa appearing for both South Africa schools and South Africa U20 sides.
Ire said he is looking forward to starting at Harlequins saying, ‘they play one of the famous brands of rugby in the world.’