Brazilian midfielder Kaka was having a dispute with his coleague Felipe Melo during a training session in Estado de Sao Paulo. Kaka was furious with Melo for his rough game that could hurt him with another injury.
Melo was repeatedly apologize to him, but the Real Madrid player left the pitch in anger. But luckily the situation didn't get worse, as the staff immediately fixed the fuse.
Kaka barely shows his anger while in Real Madrid, despite he had a bad first season there. But with uncertain position under a new coach Mourinho, Kaka felt uneasy. It's understandable if he wants to show his best performance for the World Cup, and avoids another injury. He always being overshadowed by his team-mates in Los Blancos, Cristiano Ronaldo, and World Cup is the best way to proves his true quality.