It's true that since Fergie retired we haven't made use of our finances and have made bad decisions from hiring managers to buying players. But it all stems from the ineptitude of the Glazers to David Gill and then Ed Woodward. And it was under Gill where the rot had first started where the football structure and youth development was falling way behind the competition. And the likes of Liverpool and City took advantage by developing/modernising their setup and having people in charge who would eventually aid Klopp and Guardiola who saw themselves as head coaches and not managers.
The issue with United was that we thought we could carry on going the 'manager controls all aspects' approach to the football side of the club and kept hiring managers and not head coaches. If you hire a manager who doesn't want to work with or develop the existing football structure, then the car crash will just be around the corner.. And that's exactly what happened with LVG, Mourinho and Ole who wanted total control and hence our recruitment was abysmal.
Liverpool did the same thing with Brendan Rodgers who refused to work under Liverpool's existing football structure and hence the Liverpool owners were forced into creating a transfer committee to appease Rodgers and make use of the existing football structure at the club which was led by Michael Edwards.
But all that did was create even more problems with Rodgers utilising his signings more than the signings made by Liverpool's recruitment team which was led by Barry Hunter and Dave Fallows. The piece linked below describes the mess a manager can create if he's not willing to work or develop the club's existing football structure. And that's one of the biggest mistakes Woodward made when hiring managers who didn't want to develop or work with the existing football structure.
https://www.thisisanfield.com/2015/...-myths-mistakes-liverpools-transfer-strategy/
The biggest mistake Ed Woodward made was in 2016, after firing LVG. At that time John Murtough had brought in the best scouts from all around the globe (per the transfer ground guru) and created the structure on the football side of the club which those scouts were coming in to fill in their respective regions. What Woodward did was he hired a manager in Mourinho who refused to work with the newly formed recruitment structure and hence the transfer committee was born and we would repeat the same mistakes Liverpool made when they hired Rodgers and he was constantly at loggerheads with Michael Edwards and Liverpool's recruitment team.
None of the big clubs in the world operate without a capable football structure. And without having a good support structure, a head coach will not be successful in this day and age. In my opinion, it's the duty of the owners/CEO to make sure that a scenario doesn't arise where the club's existing football structure is compromised by a manager. And hence why it's always sensible to allow a DoF type figure to hire the head coach and not a CEO/chairman.
And then on top of all that, Joel Glazer, Woodward, Judge and Baty made a mess of the wage structure. Hence our net spend is really high.