Sir Alex was a key man in selecting Moyes to replace him at the helm of the Red Devils and even now remains on the board of the club and at most games.
Defeat in Greece against Olympiakos last week emphasised the poor season that United are suffering, despite making their record signing in January and sealing striker Wayne Rooney to a big money new deal.
Ferguson knows that United will be fine, despite their slow start to a new era, and that every manager needs time to succeed with Sir Alex being a prime example for that from when he took over in the North West.
“They [United] will be all right,” said Ferguson, speaking in Los Angeles where he attended last night’s Oscars ceremony.
“It’s early days and there have been a lot of changes.