Real Madrid star Kaka believes Chelsea are on the verge of signing one of the best midfielders in the world, in Brazil teammate Ramires.
Reports suggest Ramires has all but signed for English Premier League champions Chelsea from Portuguese club Benfica for a fee reported to be 18.2 million pounds (AU$31.85 million).
Currently sidelined for several months with a knee injury, Kaka is pleased that Ramires will have a chance to show his talents on the European stage.
"I am pleased that Ramires has joined a top European club," Kaka told the Daily Star.
"For me there is no doubt that Chelsea have signed the very best young central midfield player in the world."
"Now he is at Chelsea I think he will become the best midfield player in the world within two years and will be placed in the same bracket as Claude Makelele, Roy Keane and Patrick Vieira."
"Not only is Ramires a great player but he is a humble boy and is always willing to listen and learn from those that have been in the game a long time."
Kaka was also full of praise for Chelsea midfielder Frank Lampard and believes Ramires can benefit from the England international's years of experience.
"Frank Lampard still probably has another two years left at the top and I am sure he can be a great mentor to him."
"Those two can form a devastating partnership that nobody in the Premier League will be able to cope with. Ramires is the complete central midfield player. He can tackle, pass, he works hard, he is strong and he can score goals."
The World Cup winner has also tipped the Blues to successfully defend their EPL title with Ramires onboard.
"I don't see anybody stopping Chelsea making it two Premier League titles in a row," he said.