Tom Moody has resigned as Sri Lanka coach to take up a similar position with Western Australia.
Moody coached Sri Lanka for two years
He rejected a renewed contract from the World Cup runners-up to return home to Australia in a three-year deal.
Moody said: "It was a very difficult decision to make given the strong relationship that has been built between Sri Lanka Cricket and myself.
"But at this stage in my life it was important that I made a bigger commitment to my family."
However, Moody said he was keen not to sever links with Sri Lanka completely.
"I will be more than happy to assist in whichever way I possibly can for the continuous success of Sri Lanka Cricket," he said.
"I am extremely proud of my involvement with WA cricket as a player and the success we enjoyed as a team throughout the 1980s and 1990s.
"I am looking forward to working with former team-mates such as Graeme Wood and Justin Langer."
Moody, 41, a former World Cup winner, had been in charge of Sri Lanka for two years and had been credited with the team's improved performances.
He had been viewed as a possible successor to England's Duncan Fletcher but in-house replacement Peter Moores was given the job last month.
Trevor Penney, who worked with him as an assistant coach at Sri Lanka, will also join Western Australia under Moody.
"We have been able to secure an internationally respected mentor with an impeccable record and in the prime of his coaching career," said Graeme Wood, chief executive of the Western Australian Cricket Association.
Moody will take up his new role on 1 July.
Sri Lanka Cricket said it respected Moody's decision to move on.
In a statement it said: "SLC regrets that Tom Moody has to leave our services and respects his decision.
"SLC is grateful to Tom for his valuable contributions to the success of the national and SLC during his tenure. We wish him all the success in his future endeavours."