In the event, he's not done as well as he would have hoped.
Despite last Saturday's win over Swansea at Old Trafford, a victory which stopped a rot of three successive defeats for the first time since 2001, United currently sit in seventh place, 11 points off league leaders Arsenal.
During what has been a wholly underwhelming season, both the standard of United's play and their results have given the club's fans plenty of causes for dismay, and the manager frequent headaches.
Moyes has become a touchy, divisive figure, questioning anyone who challenges his authority and often looking to shift blame onto others.
But how has he become this way?'
Here are five reasons why the Scot is now out on his own in the Premier League moaning stakes.
Ah, the old fallback for plenty a struggling boss.
Moyes has frequently laid the blame for United's bad form at the feet of officials this season, even going as far as to claim that he and his squad were "laughing at" both referees and assistant referees following the Capital One Cup semi-final first leg loss at Sunderland last week, as reported by BBC Sport.
However, that claim itself is laughable, especially when you consider Moyes' famed dour demeanour.
The concession of a penalty at the Stadium of Light, where Tom Cleverley made a foolish challenge and Adam Johnson needed no invitation to go down under it, could certainly be considered a harsh decision, as could the non-award of a penalty when Hugo Lloris felled Ashley Young in the recent loss at Tottenham. But there were other reasons behind those defeats, and you suspect that Moyes knew that.
Raging at the refs only ensured that those reasons were hidden.
As big a club as Everton are, Moyes has never experienced anything like this level of pressure in a job before.
Whole countries can come to standstills whenever Manchester United play, and as such those fans worldwide won't be slow to vent their displeasure when their heroes lose a match that they are expected to win.
The number of underwhelming home losses they've experienced this season―West Brom, Everton, Newcastle, Tottenham, Swansea in the FA Cup―also suggests that Moyes isn't handling the pressure from inside Old Trafford too well either. To add to that, the knowledge that every single defeat is going to see your image splashed across the newspaper back pages, and increasingly the front pages, for days on end must make it difficult to go about your work.
Under Sir Alex Ferguson, United always had a safety blanket when it came to handling these sort of pressures, but with him gone there is a wound to be exposed.
For any failings that are of his own doing, it must be said that Moyes has been let down by United behind the scenes too.
Embarrassing transfer failures in the summer led to United eventually signing Marouane Fellaini for around £5 million more than they would have got him for weeks previously and, almost criminally for a club of their size and need, that was it in terms of major arrivals.
Executive vice-chairman Ed Woodward was the man blamed by many for the club moving at a snail's pace in the transfer market, with somewhat unrealistic deals for the likes of Cesc Fabregas and Thiago Alcantara targeted but never pulled off.
At a time when Moyes needed assistance the most, he was let down, and the Scot's frustrations over that would only have been compounded by the struggles of Fellaini―who is very much his manager's player―and the midfielder's current injury problems.
Much better organisation is needed to sort out the club's issues in the transfer market.
Were Moyes to drive to work, he could do so up the Sir Alex Ferguson Way. He could then walk past the Sir Alex Ferguson statue, take his seat in the dugout opposite the Sir Alex Ferguson Stand and look behind him to the director's box to see Sir Alex Ferguson sitting there.
Of course it is only right that United pay tribute to such a titanic, staggeringly successful figure in their history, but it is hardly helping the man currently trying to fill his massive shoes.
There are times while watching a United game on television that you'd be forgiven for thinking that Ferguson was still the manager and merely serving one of his frequent touchline bans given the amount of times he's picked out by the camera, and maybe the club could handle this in a better way.
Does he have to be at every game? He probably insists on it, but giving him his own box to remove some awkward photo opportunities could be a good start.
Moyes will need to step out of his shadow at some point.
Perhaps the biggest frustration nagging away at Moyes is that Everton have markedly improved since he left, something evidenced by their victory over Moyes' United at Old Trafford this season and their position four points above their old boss in the league.
For 11 years Moyes sought to make the Blues tough, strong and hard to beat, and he certainly succeeded in that, but with the arrival of Roberto Martinez has come a breath of fresh air and the belief that Everton can take on the best teams by playing football against them, not simply trying to stop them.
Contrary to popular belief, there were plenty of Blues fans who weren't that sorry to see Moyes go, as they were ready to see their club take on a new direction and employ a new style.
Martinez has certainly achieved that, and to see a carefree Everton thriving and challenging for a Champions League place that he too craves is bound to have an effect on Moyes.
And that's where the moaning begins.