Cristiano Ronaldo's words after Tottenham's game were apparently heard loud and clear by president Florentino Pérez

Real Madrid's season hasn't gone as the team's hierarchy had planned, and extreme measures will allegedly be taken by Florentino Pérez in order to steer the ship back to safety.

According to Spain's Diario Gol, Los Blancos' main man is ready to tear the winter transfer window apart with interesting signings. What makes all those transfers possible is the fact that each player targeted by Real Madrid's hierarchy see their respective contracts coming to an end next summer.

Two names stand out in Real Madrid's wishlist: Alexis Sánchez and Zlatan Ibrahimovic.

The Chilean has made it abundantly clear that his days with Arsenal will end next summer, even if he's keen on reuniting with Pep Guardiola at Manchester City.

Regarding "Ibra", his age would be a matter of concern, even if he would be offered a similar sub role, just as the one he's set to undertake at Man United once he recovers from his knee injury. The player's desire to win the Premier League title would be another setback, but his even bigger desire to win the UEFA Champions League could see him say goodbye to the Red Devils next winter.

Both players would make shocking returns to La Liga after spending some time with Barcelona.

In order to provide more options at midfield, Pérez has reportedly set his eyes on four potential signings, including Ander Herrera, Juan Mata, Emre Can and Schalke's Leon Goretzka. Out of those, Can seems to be the best option for Los Blancos, as his contract negotiations with Liverpool became stalled, adding the player's ability to play both in midfield and in defense.

Real's defensive woes may have prompted Perez to seek help from their neighbors, as Jose María Gimenez and Lucas Hernández would be tempted by the Spanish giants. Lazio's Stefan De Vrij has been named as another potential target for the current UCL holders.

The last transfer Real Madrid's president is believed to be plotting is that of goalkeeper Kepa, in order to provide more depth to the squad due to the constant injuries suffered by Keylor Navas, added to Kiko Casilla's shaky form at times.