Bok beef: Irne HerbstDEFENDING champions Harlequins have signed South African second row Irne Herbst from Benetton for next season.The 29-year-old South African has spent the last five years with the United Rugby Championship club.He emerged as a clear talent during his time in the age-grade programmes in South Africa, appearing for the National Schools and U20s during his time with the Blue Bulls.The 6ft 6in, 121kg lock kicked off his senior rugby career with the Bulls in the Provincial Cup and Currie Cup competitions before graduating to Super Rugby with the Southern Kings in 2...