It's whole lot easier to slot a good/great player into an already great team core. If you can manage to also replace older players with younger players into that team/squad, you can keep it going for a while (Liverpool late 70s to late 80s, Man U early 90s to 10s, City now).
A lot of that great Utd team were of a similar age (they were all part of the "win nothing with kids" team). Once they all retire, you're left with a bunch of bit parts and you're looking to rebuild the core. That's the hard part. And that's where teams that won a lot of trophies on the bounce fall back.
A lot of that great Utd team were of a similar age (they were all part of the "win nothing with kids" team). Once they all retire, you're left with a bunch of bit parts and you're looking to rebuild the core. That's the hard part. And that's where teams that won a lot of trophies on the bounce fall back.