Make or break time for Ancelotti.
Carlo Ancelotti knows that his future as Real Madrid boss hinges on getting past Atlético and continuing the club's quest to successfully defend their Champions League title.
The Italian lifted Real Madrid's tenth European crown last May. However, in football, you are only as good as your last game and that achievement has already been assigned to the history books.
He has led 'Los Blancos' to a European Super Cup, a Club World Cup, a 22-game winning streak and the chance of winning yet another league title, his fourth in a fourth different country. However, these impressive achievements may not be enough to save the Real Madrid boss's job.
Real Madrid are his top priority. The Italian knows it is make or break. Several clubs may have expressed their interest in him based on his outstanding track record, but he has yet to sit down to negotiate with any of them.
Despite everything that is happening, he knows that football is all about results and the club's board will wait until the end of the season before making a move.
Simeone's situation is the polar opposite. He recently penned a new five-year deal as Atlético manager. That put an end to speculation surrounding his future and other clubs' interest in the Argentine. Whilst there is no managerial debate at the Calderón, there is plenty across town at the Bernabéu and it is all about what Ancelotti does next.