It's clear that the biggest problem is from the top, DOF and directors. Man united is like broken company which is very difficult to turn-around unless we get new owners, DOF and directors who are much better first.
In my opinion, only in case Quatar could take-over and rebuild the team from top to bottom is the way. (Let's say it's the thing Todd boehly did but the new owner must do more wisely).
No matter which manager comes in, they will likely do more failure rather than success.
Glazers don't care about football, so John Murtough, Richard Arnold, or ex-Ed woodward are always not what Glazers care.
Our DoF and CEO are very incompetent. This is the second biggest problem in Man united.
How do they keep recruiting new players who are not having enough of a specified quality?
How do they always say Yes to players the manager propose (even most of the manager is not good as Talent identification)?
How do they keep giving luxury wage to inconsistency players and new-comers?
How do they always pay overprice in transfer market?
Squad must be rebuild. I can say each of them has outstanding deficiency which maybe imposssible to be improved.
For example, Our captain Bruno, slow, weak, very inconsistency in the pass, not good when being pressed or in tight space.
To compensate this, other 2 midfields must be fast, good in tight space, press-resistant and physically greatness.
Do we have that player in our 11 starting player?
Our biggest star, Rashford, avoid any duel, tackle, aerial challenge with the opponents, not put effort on pressing, not good when being pressed,
always want to beat the opponent in 1-1 rather than pass the ball to teammates who are in better position.
Maybe only Kane can compensate to be False 9 to let Rashford shine, but anyway, if rashford doesn't have enough space to beat the opponent in 1-1.
He's also very useless player on field.
Our right wing, Antony, clearly he's not quick and there's one style of play. Definitely, opponents feels no harm at all.'
Our center back, Martinez, small and slow, even good in tackle and pass, his weakness is exposed more and more with high-line defending and pairs who are not quick either.
Our defensive midfielder, Casemiro, aging comes fast, slow, not good when being pressed, bad passing.
This is just some example of the biggest stars in the team who have serious deficiency. The rest of the team also have more deficiency in
the same or different aspects. I can imagine Pep, Klopp or DerZerbi could fail top 4 with this squad as well.