The Madridistas' new president Florentino Perez has wasted no time in making serious waves across world football, signing Kaka for £56 million from AC Milan and Cristiano Ronaldo from Manchester United for £80 million.
Valencia striker David Villa is also expected to arrive for around £35 million, with Bayern Munich midfielder Franck Ribery an additional expensive target.
Real's new stellar acquisitions can only mean bad news for the club's present squad members, who failed to prevent arch-rivals Barcelona from becoming the first Spanish side to win the la Liga, Copa del Rey and Champions League treble in 2008/09.
And former Manchester United striker Van Nistelrooy, who is only just recovering from a long-term knee injury, believes fellow countrymen Arjen Robben, Klaas-Jan Huntelaar, Rafael van der Vaart, Wesley Sneijder and Royston Drenthe should all move on should an offer from another club present itself.
Robben, Huntelaar and Van Nistelrooy have all been linked with moves to Spurs, while Sneijder is believed to be interesting Chelsea, Arsenal and Inter Milan, with Carlo Ancelotti's Blues also mentioned as a possible destination for Van der Vaart in the past.
"I will just stick to my contract," Van Nistelrooy told Nos Radio.
"When the other players get an offer from a big club, they should accept it.
"They all have big goals, one of which is also participating in the 2010 World Cup, possibly in the starting XI.
"It is different for me. I am injured, and I do not know what Madrid want from me."
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