Deutsche Fussball Liga CEO Christian Seifert feels Real Madrid star Cristiano Ronaldo would struggle in the Bundesliga. Seifert feels the German top-flight is much more competitive than the Spanish Liga.

"I am firmly convinced that Cristiano Ronaldo would not be a superstar in Germany," Seifert said.

"Since 2000, the high quality of training in the youth centres has made the Bundesliga steadily better."