The Mirror says Fergie wants Ronaldo back on July 28. The United manager is also keen to speak face-to-face with his want-away star to try to end speculation surrounding Ronaldo's future.
But Portugal national team physio Antonio Gaspar, claimed the Real Madrid target will not return to Manchester until August 4 at the earliest.
"These first four weeks he will do the rehabilitation work in my clinic in Lisbon," Gaspar said. "After the first month, the United doctors will carry out another exam."