It would be great to see ManUtd still be a threat for the next decade, but....
I see City as the the winners of this season. In the beginning I thought it was surely Chelsea's year (it still might be), but they have got the experienced WC players instead of young and we have the transitioning players (Liverpool, ManUtd, Chelsea etc.). Also, all the positions they needed to fill in are filled now. With the addition of a great manager like Pellegrini too, I would see no other option but an EPL title for City. If they don't win a title this season they should be the laughing stock of England considering how much they spent already. Plus, Fellaini isn't really the best option for a CM/CDM IMO.
Despite all that though, yes ManUtd have a great future and good to see they'll give their rivals a tough test for many years to come :)
All players listed are aged 23 and under:
Lots of these players have had enormous amount of experience in the Premier League and we are yet to see the best in them. Players like Kagawa, Nani, Anderson, Rooney, Young, Valencia, and Evans are reaching their prime. Sometimes it is good to put things in perspective. SAF might be gone, but we are not doomed. Call me an optimist, but I believe that Manchester United are one signing of Fellaini away from retaining the PL title.