The All Blacks have announced three changes to their coaching group following their test-series loss to Ireland.

Crusaders and Fiji forwards coach Jason Ryan has been announced as their new forwards coach, and will join the team at their camp in Wellington next week while forwards coach John Plumtree and backs coach Brad Mooar have now parted ways with the group.

"Right now, I am really feeling for two fine men who are great rugby coaches that made an enormous contribution to the All Blacks," All Blacks coach Ian Foster said.

"I have no doubt both coaches will go on to great success and I want to thank them for their hard work."

The All Blacks have announced three changes to their coaching group following their test-series loss to Ireland.

Crusaders and Fiji forwards coach Jason Ryan has been announced as their new forwards coach, and will join the team at their camp in Wellington next week while forwards coach John Plumtree and backs coach Brad Mooar have now parted ways with the group.

"Right now, I am really feeling for two fine men who are great rugby coaches that made an enormous contribution to the All Blacks," All Blacks coach Ian Foster said.

"I have no doubt both coaches will go on to great success and I want to thank them for their hard work."

Foster will resume leading the backs in the short term.

The All Blacks assemble in Wellington on Monday before travelling to South Africa ahead of the first test against the Springboks at Mbombela Stadium on August 7.

Assistant Coach Jason Ryan of the Crusaders. Photo / Getty Images.

Earlier this year Foster backed his under-fire assistants and was granted additional resource in the form of skills consultant Andrew Strawbridge to instigate improvements from the forward pack in particular.

At Foster's request, the New Zealand Rugby board re-signed Plumtree and fellow All Blacks assistants Brad Mooar, Feek and Scott McLeod through to the 2023 World Cup.

Removing any of those assistants now would, therefore, reflect a rapid backflip from all parties and result in a significant pay-out from New Zealand Rugby.

As well as leading the Crusaders forward pack, Ryan holds the same position with Fiji under Vern Cotter through to the World Cup. To inject his nous into the All Blacks forwards, NZ Rugby is likely to have to buy out Ryan's Fijian contract.

Ryan's telling contribution to the set piece, maul defence and his ability to craft a dominant platform was evident in the Super Rugby final when the Crusaders forward pack dismantled the Blues at Eden Park.

Ryan assuming charge of the All Blacks forwards is potentially complicated, though, as he is a loyal and long-time ally to Crusaders head coach Scott Robertson.

Robertson, Ryan, Blues coach Leon MacDonald and Hurricanes mentor Jason Holland joined forces to contest the All Blacks job when Foster was appointed in late 2019 following the semifinal defeat to England.

Plumtree may not be the only All Blacks assistant coach moved on, either. With the attack failing to fire Mooar's role is also under threat.

NZ Rugby were forced to pay an undisclosed six figure sum to Scarlets in 2020 with Mooar at the time six months into his three-year deal as head coach of the Welsh club.

Suggestions MacDonald could join Foster's team are, however, thought to be wide of the mark.