Once the decision was made, it was not difficult to seek out the Blues.
"I started my Super career with them and they have always been close to me. JK (Blues coach Sir John Kirwan) has always backed me and motivated me to be my best."
He is excited about the prospect of returning to a team he believes is on the improve.
"They are a quality side but execution is letting them down so far. Hopefully I can play a positive role because backs get excited with the sort of front foot ball the Blues are getting.
"I will come home a better rugby player. I am mentally stronger and I've learned a lot that I can bring back into the Blues environment."
He is also firmly focussed on again pushing for an All Blacks spot in the future.
"It's great news that Rene has chosen to resume his rugby career back in New Zealand," said New Zealand Rugby Chief Executive Steve Tew.
"He's a classy player with the ability to surprise that makes him a favourite of fans. He will have learnt much from his time in France and is sure to be an exciting draw card for the Blues and North Harbour."