The Portuguese head coach joined the club in November 2024 to replace Erik ten Hag, but has failed to get consistent positive results, failing to win back-to-back Premier League wins his time at Old Trafford.
However, despite further humiliation in the Carabao Cup by League Two opponents Grimsby Town in August and a current three-match losing streak in the league, Sir Jim Ratcliffe has come out to dismiss any intentions of parting ways.
"Ruben needs to demonstrate he is a great coach over three years," he said to The Business podcast.
"Yes. That is where I would be. Three years. Because football is not overnight. It's three years. You also look at (Mikel) Arteta at Arsenal. He had a miserable time over the first couple of years."
Ruben Amorim recently lost his 50th match at the helm of the Red Devils when his side lost 3-0 in the recent derby against Manchester City, his 21st loss at the English club with 20 victories and nine draws.
“We have to be patient. We have a long-term plan. It isn't a light switch," added Sir Jim Ratcliffe.
"You can't run a club like Manchester United on knee-jerk reactions to some journalist who goes off on one every week."
United currently find themselves on tenth position on the Premier League table after seven matches and will travel to Anfield to face Liverpool after the international break on Sunday 19 October.
Nottingham Forest are set to receive a double injury boost ahead of their Premier League showdown with champions Liverpool after the international break, with both Chris Wood and Callum Hudson-Odoi expected to return to action.
Manchester United could be without striker Benjamin Sesko for key fixtures following a knee injury sustained in the closing stages of last weekend's 2-2 draw with Tottenham.
David Moyes has praised James Garner for his outstanding form this season, saying the Everton midfielder is edging closer to an England call-up.
Leeds United manager Daniel Farke has provided a detailed update on the club's injury situation as the Whites head into the international break aiming to reset after a frustrating run of results.
