The former Manchester United manager is confident his successor will turn things around at Old Trafford if he's given enough time.
The Red Devils have struggled in their first season without the 72-year-old at the helm, with the former Everton boss on course to miss out on qualification for next season's Champions League as well as being 2-0 down to Olympiakos in the quarterfinals of this year's competition.
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Speaking at a gathering in Los Angeles, he declared: "They will be all right. It's early days and there have been a lot of changes [Moyes] needs time. I was there for 27 years, so with a new manager it takes time. But they'll be OK."
United is in seventh place in the Premier League, 12 points behind fourth-place Manchester City while having played one game more.
Ferguson cemented his place as the most successful British manager in history over his 27-year spell at Old Trafford, winning 13 Premier League titles and two Champions Leagues, among others.