About Juventus regeneration, I think marotta already did something extraordinary.
Juventus Next XI
Neto/Leali
Rugani
Ogbonna (Could be sold, but i prefer to keep him )
Mattielo ( has heavy injury, but i am confident he will be back stronger)
Isla ( Could be sold , i prefer to sold him )
Sturaro
Asamoah
Pereyra
Berardi
Coman
Zaza
In current condition, maybe some of them are not ready.
But everything will be difference in future .
Some of therm will has contract untill 2019/2020 with small salary.
That could be huge advantage for us.
For buying player U 20-25
We have a great relationship with palermo, udinese, sassuolo and empoli.
They have great scout and believe to young player.
Could be huge advantage.
For u 9-18 , i do not know very well about this sector.
But considering how amazing Marotta snatch player like pogba, coman, berardi , etc, i have confidence juve will upgrade this sector.
For player above 25?
You must ask Agnelli.
But he can snatch player caliber tevez, barzagli, pirlo, and vidal with "small salary" and small fee transfer / free
He also look great player like sanchez, aguero , etc who has quality.
The problem is not marotta. The problem is our current financial.
But i am sure our financial will improve soon.
About current players.
We can use pirlo, barzagli, tevez, evra untill 2016
We can use bonucci Chiellini, Marchisio buffon padoin, caceres, litch till 2017/2018
The can be good teacher for our next generation.
We have big gem like morata vidal and pogba.
Morata has buy back.
So let say we switch it with somone like dybala or somone else.
Marotta already think to build future with small budget.
He already think till 2020.
While we just think about how to win UCL at 2016 without not thinking about future.