It was older though. We had the inherited squad plus a policy of buying 24 years olds upwards whereas all our purchases now are younger, a youth academy is better and our older players are better, that will lead to a squad being together for longer.
My post is more to say, all the players in that list are broadly young enough and good enough to still be here after those periods.
They might be good enough, but why would they stick around and be 2nd/3rd choice for that long?
You have Bajcetic, Dom, Mac Allister, Jones, Gravenberch, Elliott, and Clark below. That's 7 midfielders (not including any incomings) that are going to be happy sharing minutes for the next 5 seasons? I doubt it.
Also, Robertson would be 35 and Tsimikas would be 33. If we haven't sorted out a younger left-back to be first-choice by then, I'd be shocked.
Likewise, Diaz and Jota would be 32, and if Gakpo and Nunez are still here along with Doak, how many attackers would we have signed by then? 1?
The list below isn't realistic because it'd have very little squad turnover with a bunch of older players and young midfielders who would have to be bench players for many years.
I'd go with Gomez, Elliott, Trent, Quansah, and Jones and work from there. Clark and a young attacker too (Danns/Doak).
In 5 years:
Alisson
Konaté
van Dijk
Gomez
Quansah
Robertson
Tsimikas
Trent
Bradley
Bajcetic
Szoboszlai
Mac Allister
Jones
Gravenberch
Clark
Diaz
Elliott
Gakpo
Jota
Doak
Nunez
In 10 years:
Kelleher
Quansah
Trent
Bradley
Bajcetic
Szoboszlai
Jones
Gravenberch
Clark
Elliott
Doak