Three of the top players of Real Madrid, Cristiano Ronaldo, Sergio Ramos and Iker Casillas, are rumored to be on the trading block that could potentially leave the Los Blancos side without its three superstars.

Real Madrid president Florentino Perez is already feeling the pressure if his three marquee players leave the team as it would put a heavy dent on his leadership. After all, Ramos, Ronaldo and Casillas have a combined 481 appearances for the club and their experience would not be easily nor cheapily replaced, according to Soccer Laduuuuma.

Both Ramos and Casillas play a major role in Real Madrid's offense and Ronaldo will likely follow suit should the duo leave the team. The move of Ramos is expected to influence Ronaldo's future in Real Madrid, the report said.

It was hinted that Ronaldo was not happy when Ozil and Di Maria left the team. The possible departures of Ramos and Casillas could be the final straw for Ronaldo.

Meanwhile, Manchester United said it was not interested with the $31.5 million offer of Real Madrid to acquire David de Gea. Instead the English side said it would rather let de Gea leave the ball club on a free agent and receive nothing, reported The Mirror.

Real Madrid is pursuing to get de Gea amidst rumors that three of its superstars are planning to leave the club. De Gea was reported to have told his teammates that he wanted to move to Madrid than stay at Manchester this summer.

But Real Madrid is not willing to match the $55 million valuation set by Manchester for the 24-year-old's contract. The Spanish side said that the market value of de Gea's contractual position has been reduced as he only has one year left on his contract. Manchester United even gave Real Madrid an ultimatum regarding the transfer.

In return, Real Madrid retaliated by rejecting Manchester's $55 million offer to get World Cup-winning defender Ramos. Madrid told Manchester that they want a better offer for the 29-year-old Ramos.

Ramos still has a two-year contract left with Real Madrid but Perez is not yet ready to depart with Ramos, the third highest contract at the club after Ronaldo and Gareth Bale. Perez is also faced with the fact that Ronaldo's stay with Real Madrid hinges on whether Ramos will be staying with the club or not.

But Real Madrid is facing a dilemma as Manchester United seems eager to acquire Ramos and was reported to have submitted an improved offer on the same lines as Wayne Rooney.