The midfield marvel struggled with form and fitness in his debut season at the Bernabeu, as Real ended the campaign empty-handed.

"It was a very difficult season which I had, but we have examples of players who were not in good form before the World Cup and ended up doing well, so I'm not worried," Kaka said.

The 28-year-old was forced to miss Real's final game of the season at Malaga due to a hamstring injury, but should be fit for the opening game against North Korea.

"I'm going to be evaluated, they will see my condition and that I won't have any problems. I will be 100% by the World Cup," he added.