"That's the case with him. At 23 Cristiano is reaching that stage where his maturity, personality and the presence he has on the world stage should help him."
Ferguson said Ronaldo, currently on crutches, is scheduled to have his plaster removed in eight days' time, at which point he will return to United to start his rehabilitation.
He is likely to be sidelined until the end of September, missing their opening five Premier League matches, including games at Liverpool and Chelsea, plus the Uefa Super Cup against Zenit St Petersburg.
United beat Kaizer Chiefs 4-0 in Pretoria on Saturday in the latest match of their South Africa tour, Ryan Giggs, Wayne Rooney and substitutes Tom Cleverley and Fraizer Campbell all on the scoresheet.
They have subsequently flown to Nigeria, where a different line-up - including Gary Neville as he continues his comeback - will play Portsmouth in an exhibition game.
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