I really can't see Man U slipping much below the top six in the next decade. As IainR says, the game has changed far too much. If I'm honest, as a 'Dirty' Leeds supporter, of course I'd love to see them fall to the depths we did, but it just isn't going to happen. There are far to many monied people out there that would take the club on because at the end of the day its a money machine! We on the other hand have much the reverse, we will now always struggle to maintain a position in the PL (...if we ever get back there!?) due to the glass ceiling of the four big clubs blocking the way. Spurs are more likely to fall than man U and I also doubt very much that they will. It cost a fortune to finish just mid-table, Man U will always now have the cash to at least do that.