"Viljoen turned his back on his international career with Namibia to chase his dream of playing first class cricket in New Zealand and ultimately for the Black Caps at the next Cricket World Cup, and is very excited and grateful for the Otago opportunity."
It therefore seems unlikely Viljoen will be available to play for Wanganui on the first weekend of the season - the three day Chapple Cup tournament - due to his affiliation to a different association.
However Bannister, the Wanganui coach, is still hopeful Viljoen could make a flying stop "home" before heading south if an appearance can be negotiated with Otago.
"He'll definitely come back, he owes me a bit. I know Ben Smith can [play Chapple], although he plays for Central Districts. That will just take some discussion to see."
Bannister said they would still like to secure at least a couple of professional players to strengthen up the local club and representative programme for the coming summer.
"For this to go forward, the local clubs need to play a support role in making this happen. Ideally there needs to be three playing pros fronting up for different club teams next season assisting with the coaching, on-field leadership, and available to play rep cricket to improve the standard in the city."