'It wasn't working': All Blacks assistant coach MacDonald quits on eve of tour to SA

All Blacks head coach Scott Robertson said on Thursday that assistant coach Leon MacDonald left his staff on the eve of their Rugby Championship Tests in South Africa due to a clash of coaching styles.

Robertson and MacDonald mutually agreed to part ways after discussions about their working approach, New Zealand Rugby said.

"Leon and I have been having some honest conversations with each other for a little while now. As coaches, we have differing views and both agreed it wasn't working," Robertson said in a statement.

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MacDonald left after just five games under Robertson, who took charge of the All Blacks this year following erratic results under predecessor Ian Foster.

Robertson told reporters in Auckland that the differences quickly become obvious to both parties.

"Over the period of time since we started coaching together, we just feel like it hasn't quite clicked," Robertson added.

"We haven't lined up where we need to on the rugby side of it."

The All Blacks boss said the pair differed on their "philosophy on rugby", but refused to divulge details of the split.

"There was no intent to get to the point where we are now, but we just believe for both of us, as for the All Blacks group, is to make the call now.

"We never thought it would get to this point - but it has."

Thank you to Leon MacDonald for all he has contributed as All Blacks Assistant Coach. Leon has announced he has decided to leave the All Blacks coaching group ahead of the two Test matches in South Africa. He departs with the respect and best wishes of us all. ?? pic.twitter.com/CmzJ6MEhZ3

Robertson said he discussed the matter with the players after the decision was made.

New Zealand's tour