Brazil coach Dunga believes Ronaldinho needs to train more to usurp Kaka as the world's best player.
The 1994 World Cup-winning captain thinks that on current form no-one can touch AC Milan playmaker Kaka but claims Barcelona star Ronaldinho - the 2004 and 2005 FIFA World Player of the Year - could regain the tag of the world's finest.
Dunga told Catalunya Radio: "Ronaldinho has to train more. When he is fine physically, there is nobody who can stop him.
"Ronaldinho suffers from a lack of speed. He cannot escape rivals in 30 or 40 metres as he used to do.
"Nowadays, Kaka is the best in the world. Ronaldinho could be the best, as well as Robinho, but Kaka is the best now."
Ronaldinho and Kaka have asked Dunga and the Brazilian Football Confederation not to be considered for the Copa America, which will take place in Venezuela between June 26 and July 15.
Brazil, who will be looking to retain the title they won in 2004, have been drawn in Group B alongside Ecuador, Mexico and Chile.
Dunga told Catalunya Radio: "Ronaldinho has to train more. When he is fine physically, there is nobody who can stop him.
"Ronaldinho suffers from a lack of speed. He cannot escape rivals in 30 or 40 metres as he used to do.
"Nowadays, Kaka is the best in the world. Ronaldinho could be the best, as well as Robinho, but Kaka is the best now."
Ronaldinho and Kaka have asked Dunga and the Brazilian Football Confederation not to be considered for the Copa America, which will take place in Venezuela between June 26 and July 15.
Brazil, who will be looking to retain the title they won in 2004, have been drawn in Group B alongside Ecuador, Mexico and Chile.
Copyright (c) Press Association
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