Don't think I'd take anybody from this current squad and put them in the first 17 from 10 years ago, and we were already on the decline at that point.
Where we are now is due to a doomed strategy of allowing good players to leave, and replacing them with worse ones (or not replacing them at all).
If you replace when you are at the top not only can you offer them a happier team to join, but also prize money isn't on the cap, so you can pay the same, or less then your rivals and still be competitive with the money you offer.