Wakefield coach Richard Agar has stepped down from his post and been replaced by assistant James Webster with immediate effect.
Agar leaves in the wake of the Wildcats' 20-12 defeat by the Bradford Bulls on Sunday, a result which left them only six points above the bottom two.
He had been with the club for two-and-a-half years, leading them to the playoffs in 2012, and he took France to the quarter-finals of the 2013 World Cup.
"I spoke with the board of directors a number of weeks ago outlining the reasons why I had decided to look for another job within the game at the end of the season and therefore requested a release from the remaining two years of my contract," said Agar.
"All parties felt that with a new coach being decided upon and the club entering the recruitment period, it would be hard to continue in the role, especially with the players knowing I was going. It would also allow James to start putting into place his plans for next season.
"The club has recently faced some extremely difficult and uncertain times and hopefully will be in a position in the near future to provide stability and consolidate their position in the top flight and give James the resources he needs to be successful.
"I have been extremely honoured to coach this famous club and am grateful for the support of Michael Carter, Chris Brereton and Kath Hetherington during my time there.
"The club has a tremendous spirit about it and I would like to take this opportunity to wish Michael and Chris all the very best for their future ownership of the club."
Webster's first game in charge will come when the Wildcats welcome bottom side London Broncos on Friday June 13.
He said: "Everyone at the club knew this would be a difficult year with some hurdles to overcome but we've set some goals and if we are successful in reaching them then I believe the club will be in a much stronger position going forward.
"Rich has to be credited for rebuilding this team through some adverse times. I would personally like to thank him for the time he has invested in me and wish him all the best."