"There are a lot of problems with quotas because it does affect the European Convention freedom of movement of labour, so to try to limit it to six could be difficult.
"But Uefa and Fifa are slowly introducing into their competitions where your squad of sixteen has to have four, five and then six qualifying players - those would be players who have been at the club for three years."
Manager Gareth Southgate was keen to back the transfer policy developed by the club during his spell in charge thus far.
The 38-year-old allowed experienced players such as Mark Schwarzer and George Boateng to leave the Riverside during the summer but believes the young talent coming through, as well as those he invested in such as Marvin Emnes and Didier Digard, are good enough to compete at this level.
"I do think it's important that in the 1990s it was right for the football club to buy players like Ravanelli and Juninho.
"Without doubt the last 10 years have been fantastic in terms of cup finals and going into Europe, but we now have to balance things off.
"To be able to bring in top stars now you need the sort of money Chelsea or Manchester City have.
"We've got to be unique, we've got to have an identity. Let's do it our way.
"We're a proud town and a proud club and if we can bring our own youth through, and add youth from elsewhere and still take on the big boys, it'll give us a lot more satisfaction."
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