"But there's clearly a change in policy. Young, raw players, like Dhanda, Celina, John and Asoro, are now the prime targets, either due to choice or necessity, or perhaps even a combination of the two."
Not sure about this. We've been bringing in young players from other academies for years. The Dhanda signing was really no different from how we got Tyler Reid or George Byers, and likely in place before Potter's appointment. And last season we took two players you would generously describe as "raw" in on very expensive loans for the first team.