I believe both Dubbo and Werribee should import their own bulls, sometimes the best laid plans don't work out and enough time has been lost already. I am sure there would be at least some regional zoos interested in having river hippos if given the chance, I believe that Altina had mentioned on their S/M or website an interest in them. Also I would not rule out perhaps one or two NZ zoos like Orana possibly might have an interest at some point in the future!
New Zealand is still awaiting a hippopotamus IRA, but the availability of this species in the region could give Orana Willdife Park the motivation it needs to acquire this species. As New Zealand’s only open range zoo, they remain the most likely facility to acquire them.
Crocodylus Park have expressed an interest in holding Common hippopotamus and like Orana Wildlife Park, would probably accept surplus - but not undertake an import themselves.