This is bull$#@! and will thankfully never happen. That team is so mediocre compared to our current one.
- - - Updated - - -

You just don't understand the slang Mark uses.
How is it bs? Do you deny that domestic players are easier to retain? That can be empirically proven! REALLY easily too.
For simplicity sake: Look at Bayern. They retain the majority of their players. Or look at our turnover over the last few years...the voluntary and involuntary departures.
Most of those players are under 25, and none are mediocre. The worst ones have high upside.
That wasn't a team by the way - without a doubt players like Pellegrini, and Romagnoli would be bench players.
I would fill the spots that can't be filled with domestic players with foreign players with the bench being nearly all domestic.
For example - I'd prefer a team like this that could grow as a team together and stay together for many years.
--------Insigne-------Belotti---------Bernardeschi--------
--------------Verratti---------Pjanic-------------------------
----------------------Marchisio----------------------------
Sandro-----Chiellini---------Bonucci-------Florenzi-------
-----------------------Buffon-------------------------------
Bench could be: Pellegrini, Kean, Romagnoli, Rugani, Caldara, Donnarumma.
Ultimately:
Depending on how you allocate the players - there are three positions that you cannot fill domestically.
-Leftback for sure. So try and keep Sandro.
-Midfielders: Basically, would need 1 to 2 imported midfielders. Guys like Fabinho, N'Zonzi, Pjanic are all great depending on needs. Perhaps an attacking midfielder as well - whether that is a winger like Douglas Costa or Cuadrado or a playmaker like James, would depend on needs.
- - - Updated - - -
Yeah we need to change our transfer strategy after reaching 2 CL finals in 3 years
And switching to a focus on more Italian players should get us back to another finals.

Nationalistic transfer strategy
That's Bayern's strategy and turnover of players is very low. It's a moot point anyways because unlike the Bundesliga, our rivals will do anything to NOT sell us their players, so it isn't realistic.
There are still many challenges, and what works in the past will not necessarily work in the future:
-We're still losing ground against England in terms of top line growth
-Serie A is getting more competitive
-Relying on finding Paul Pogbas is not a sustainable a strategy.
-We sell any player who wants to leave. Meaning that everytime our team goes far, the demand for our players increases, which significantly increases the risk of the team being dismantled each year that the team does well.
You have 2 choices:
1)
-Become tougher with players
-Open up the pocket book more
2)
-Focus on domestic players
-Supplement with foreign players when needed.
-Focus on academy