Former Brazil international Zico believes Alexandre Pato's move to Chelsea is a big opportunity for his compatriot to prove his worth at the highest level.
 The Corinthians-owned attacker joined Chelsea on loan until the end of the season in January transfer window,but has yet to make his official debut for the Stamford Bridge side.
 "It's a fantastic opportunity for him. You could even call it a golden opportunity,"Zico told Chelsea's offiwebsite.
 "He's a player who has had ups and downs but he is a top-quality player and I think he will settle at Chelsea and do very well,which will also be good for the national team."