Alexandre Pato has a "golden opportunity" to prove himself at the top level of European football with Chelsea, according to Brazil legend Zico.
Pato, 26, moved to Stamford Bridge on loan from Corinthians in January but has yet to feature for the Blues as he undergoes what interim manager Guus Hiddink has described as a "preseason" regime at Cobham to improve his fitness.
Concerns have been raised that Pato will not return to peak condition in time to make a significant impact for Chelsea this season but Zico -- who met all of the Blues' Brazilian stars during a visit to Cobham on Monday -- believes the former AC Milan striker will prove his worth at Stamford Bridge.
"It's a fantastic opportunity for him," Zico said of Pato in an interview with Chelsea's official website. "You could even call it a golden opportunity. 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 very good for the national team.
"When Pato broke through, he was considered the jewel of Brazilian football. He moved to Milan and was doing very well but then injuries came along and unfortunately he really suffered with them. Now he has another chance to prove his quality at Chelsea and get back to his best."
Zico is in London covering the Champions League for Brazilian TV and took the opportunity to interview Willian, who has been Chelsea's outstanding performer during a nightmare season and has reportedly been offered a new four-year contract worth £120,000-a-week to ward off potential suitors this summer.
"Willian is having an amazing season and is getting better all the time," Zico added. "It's great for the Brazilian people to see our players do well and enjoying success abroad and, of course, it also benefits the national team."