My policy is simple. Scout everywhere for young talent (preferably under 19 years old), try buy for cheap but splash the cash for outstanding talent. My squad is extremely young - average age around 21.5 years. GK and central defenders are the oldest players with age range of 23-28.
Wages are the biggest issue but I'm dealing with financial problems by selling a star player every season, but he always has a youngster at his place that has a potential to be even better than him.
Paratici is still a director of sport but I'm ignoring him because his recommendations are terrible. He recommends me mostly players from Serie A that have a scouting rating around 60.
Almost exactly the same when I was Juve coach. Paratici would recommend Serie A players who were worse than what I had, simply because it was a core principal at the club to recruit from nation. I ignored it.
By the time I left Juve I had over €1 billion transfer budget - 10 years of signing almost exclusively under-23 players and hoarding them, sending them on loan, also signing freebies and sending them on loan to sell later, You can sell €150m-€200m of players per season after a few years, by the latter years I was selling €400m worth of players, and that was with a first team squad of 25, U23, U20 and U19 teams full of talents, and more than 100 players on loan. All of these loanees had 100% of wages covered, and monthly loan fees of between €100K and €400K (some loanees were world class and had no space for them).
It's not realistic but the game allows it, so it's too easy.