Asier Illarramendi has no doubts he's signed for the biggest club in the world after his move to Real Madrid.

The midfielder has joined from Real Sociedad.

"No, man, it's clear that Real Madrid is the best club in the world; they've proved it over the years. The president and his entire board of directors made a massive effort so that I can be here today and there's nothing more I can do than thank them as well as all the fans who gave me such an incredible welcome.

"The truth is that it changes my life a bit; I'm from a town of 5,000 people and moving to the capital won't be easy. It will be a pretty big change, but I'm not afraid. You have to face big changes in your life and it's an interesting challenge. So I hope that it all goes well for both me and the club."