"Maybe my style of managing is the same as Ferguson's. Sometimes I am frightening. I think I have some similarities with Ferguson," said the Brazilian.
"If I listen to Ronaldo or Nani, they say to me 'Sometimes he's like a father or a grandfather'. And I am the same.
"But sometimes you need to be hard, disciplined. This is my philosophy. And the thing that makes me angry is a lack of professionalism."