Jesus United have spent 250M in 2 years and you're trying to realistically blame the fact your manager is **** on the Glazers?
United's youth recruitment has been shocking since the mid 2000s anyway and you were just buying quality young foreign players like Arsene Wenger did in the 90s or Chelsea have been doing since 2012.
The Glazers deserve no blame that your manager is atrocious. He was doing the same thing at Bayern. In fact the story is pretty similar to Bayern.