1, replaced a Galactico class manager (Fergie) with Moyes and gave him a 6 year contract. Jose (the ideal replacement) was available but, they thought it would be better to hire a manager who has never won a trophy in his life.
The rushed replacement is key also. Why was SAF allowed to give just a few months notice? In fairness, Maureen could have been an epic failure. Nobody in their right mind would want to take that job immediately after SAF. Allowing our main guy to leave after 25 years with no plan was a disaster. Allowing the next guy to wipe out almost everything in a few months shows just how incompetent and useless the Glazers and their lackey Woody are.
2, got rid of our entire (experienced) defensive line, in a single transfer window.
We also lost our entire coaching staff and David Gill who was as important. It would not happen in any properly run business.
3, bought Fellaini for above his release clause
All related to the failed change of management (Gill/SAF), I think Moyes was on holidays at the beginning of the transfer window. We were late going to market and messed up on other targets (remember the Herrera fiasco?). The Fellaini release clause expired and we were left desperate to sign somebody. An epic management failure.
4, kept faith with Moyes even after he'd basically given up on our entire team and the season. And only sacked him once the season was completely wrecked.
Yet another epic management failure. There was no change over plan after SAF. The players naturally took an instant dislike to Moyes. He was never going to succeed.
5, bought Di Maria - British Transfer Record. The only player listed in the World FIFA XI, who was playing in the EPL. Arguably Madrid's best player. MOTM in their final game (CL Final). We did not know how/where to play him and sold him within 12 months, for a significant loss.
Blame donkey LVG for this. ADM is a world class player. He treatment at the hands of LVG was a disgrace. He was right to leave as quickly as possible.
6, attempted to sell DDG (our best player for many years) - they only failed because of Madrid's mess-up.
Dont think we can blame the club for this, DDG wanted away.
7, LVG was allowed to implement his non-goal scoring philosophy, even though the fans/media were getting on his back. He was even booed. The OT fans chanted "attack attack attack". He was eventually sacked, but was given approximately half a season to rectify the boring football which he had implemented...but he failed to change.
Like Moyes, only sacked when it was confirmed the Glazers would be hit in their pockets. LVG should have been gone last Christmas.
I'm sure there other errors in judgement, but it would not shock me if they sold Pogba a few years later for a cut price deal, to our rivals.
Get a feeling Pogba will be brilliant but trouble (start flirting with Barca/Madrid after winning a few player of the month awards), or else he will be very average. Was not overly impressed with him at the Euro's, especially when France were playing against some very average teams. The Italian league is pretty crap, so easy for him to stand out there.