Warriors assistant coach Andrew McFadden is to leave the club at the end of the season to take his family back home to Canberra.
McFadden joined the Warriors as an assistant coach in 2013 before spending almost three seasons as head coach from 2014-2016.
He has continued in an assistant coaching role since then.
"This is Cappy's sixth year with us and he has given the club tremendous service," Warriors CEO Cameron George said in a statement.
"We'd love to see him stay but he has a growing young family and it's important to think about their future.