Sir Alex Ferguson has already warned Ruben Amorim about one major Man United change

Ruben Amorim can be guaranteed one thing when he is appointed Manchester United manager.

Like David Moyes, Louis van Gaal, Ole Gunnar Solskjaer and Erik ten Hag, the name Sir Alex Ferguson has followed every United manager since 2013. With 13 Premier League titles, two Champions Leagues and numerous other domestic trophies, Ferguson is rightly seen as the Reds' greatest-ever manager.

It's also why the hot seat at Old Trafford is now often referred to as 'the impossible job.' And now Amorim appears set to be the next man tasked with restoring English football's record champions somewhere close to their former glory.

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One major factor behind United's dramatic decline since Ferguson's surprise retirement announcement 11 years ago has been transfers. Endless amounts of money have been spent with very little in return.

The great man himself has reportedly acknowledged this. According to the Athletic, Ferguson has expressed an opinion to friends that signings have been below the necessary level to play for United.

Ineos were meant to change this when they took over football operations at M16 but their start has been unimpressive to say the least. How many of United's summer recruits under the club's new director of football Dan Ashworth have impressed?

Granted, the former Newcastle and Brighton man has not been in the job for long after being on gardening leave from the Magpies. The same could be said for new chief executive Omar Berrada.

But the pressure is now on United's new brains trust. Retaining Ten Hag was a disaster and supporter's patience is running thin after yet another poor start to the season.

Amorim will be an exciting appointment on paper. The 39-year-old is more charismatic and speaks better English than Ten Hag.

It's already easier to see how the Portuguese will motivate a dysfunctional dressing room better than the former Ajax boss. Ending Sporting's 19-year league title drought is also a major plus, offering similarities to what Ferguson did at the Reds when he arrived from Aberdeen.

Turning United back into title challengers will take plenty of time and patience. Whether Amorim gets that will depend on if Ineos can enact the change United so badly need when it comes to transfers.