"If Ronaldo is the best player in the world or Europe he will have to prove it in the Euros because that will be the only way we can judge him, when all the best players will have had the chance to be recognised," said Platini.
"It's difficult to compare players in competitions and teams. Is it more difficult to play right wing in Manchester than it is in Italy, where it doesn't exist?
"Ronaldo has a number of advantages to his game and, of course, the last matches in the finals of the European Championship this summer will be decisive."
