The following came in from a Dutch (by way of England) contact:
Joop Albeda is a good choice. You need to name it together with another Dutch coach who made the Dutch men European Champion and won many National Titles. He is now General Manager of a football club ( PSV Eindhoven). His name is Toon Gerbrands. I am also missing, and he is still an FIVB advisor and currently psychology coach for Ajax: Peter Murphy. Peter has been mentor for coaches like Joop Albeda and Harry Brokkink and is comparable to an Arie Selinger.