Everton have finally found a replacement for Carlo Ancelotti after confirming the appointment of Rafa Benitez as their new manager.
However, Farhad Moshiri's decision to hire a former Liverpool boss has split the Toffees' fan base. Many cannot and will not forget Benitez's six years stint at Anfield.
Despite the fact Benitez will become the first man to have managed both Liverpool and Everton since William Edward Barclay in the 1890s, there are a host of other managers that have done the unthinkable and joined a rival club.
From Jose Mourinho to Brian Clough, Sportsmail has rounded up six managers that have gone to the dark side, and assessed how the move worked out.