Christoph Metzelder thinks Real Madrid are taking big risks by spending £80million for Cristiano Ronaldo.

The Germany international believes such extravagant spending during the global economic crisis was unnecessary.

The 28-year-old former Borussia Dortmund man is the first Real player to speak out against Ronaldo's huge transfer fee.

Metzelder said: 'I don't know much about this evolution, and I am quite worried about it.

"Spending 96 million euros on someone that can get injured or be in a bad form isn't correct to me, especially during this period."