Capello coached Ronaldo at Real Madrid in 2006 before sanctioning the sale of the brilliant but troublesome forward to AC Milan.
Capello: Ronaldo was a bad influence
Fabio Capello has named Ronaldo as the best player he has coached, but also the worst influence.
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Speaking at the Globe Soccer Awards, Capello discussed his time at Madrid.
"Ronaldo, the phenomenon, was the greatest player I have ever coached," the Italian coach said.
"He showed up [for pre-season] in Madrid and was 96kg, so I asked him to get to 88-90 kg.
"There was nothing I could do. He was a great player, but a negative influence for the group."
Ronaldo was shown the Madrid door in the January transfer window before Capello's men recovered from a deficit to overtake Barcelona and win La Liga.
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