I think you'll find my knowledge of the situation is absolutely fine, thank-you.
Firstly, let's remove some of the myths of your post. Manchester United consistently spent the most money of any team in the league for a long time, and the reason they've been outstripped by Chelsea and Man City is because those two sides needed huge investment to make the difference up.
You also seem to have the view that Moyes' season was just a one-off caused by a rubbish manager. I'll grant you he wasn't the right manager, but his effect has been overstated.
Fundamentally, United are a tired side with a great need for a sizeable personnel and mentality change. We're talking here about a complete redevelopment of the back four, a complete rethink of the centre of midfield, and probably 5-8 players leaving this summer.
This is a huge job. To suggest LVG comes in and just instantly turns you into title winners is beyond ridiculous. It would be an astonishing achievement, even if he did notionally resolve all of the issues in your squad in one summer.
Top four is your aim this year, no matter what you reveal to the press. That's the realistic progression.