He said: "Pato was a little dazed but happy on his first day. He underwent many tests, saw the whole training ground structure and walked through the trophy room. It was a long walk, as we've won a lot!
"Despite his tender age, he is already very mature and dealt well with the pressure of these days. He will be helped by the fact he can settle in gradually here. I hope he can become a player I can count on for the next few years."