Newcastle assistant coach Jean-Paul de Marigny will leave the A-League club to reunite with Kevin Muscat at Melbourne Victory.
De Marigny, who first joined Victory in 2013 and was a key part of their 2014-15 premiership-championship double, spent last season at the Jets to be closer to his ill wife Donna.
With Donna's health improving, the 52-year-old will return to Melbourne as assistant coach for the 2016-17 season, replacing the outgoing Rado Vidosic.
De Marigny said he had a passion for both clubs and had enjoyed working under Jets coach Scott Miller.
"I leave Newcastle with a heavy heart, but the reality is that Donna and I want to restart the lives that we were forming when I was in Melbourne," he said.
De Marigny developed his coaching experience in NSW with clubs including Newcastle, Marconi Stallions and Sydney Olympic, and has been an assistant coach for the Australian under-17 squad.
Muscat said the players and staff were excited to welcome him back and thanked Vidosic for his season-long contribution.