On Tuesday, the Duke and Duchess of Cambridge will officially open St George's Park (SGP), the FA's new £100million state-of-the-art coaching hub near Burton.
Neville, who took part in a session with local youngsters along with former Manchester United coach Eric Harrison at SGP on Tuesday morning, has cautioned against expecting too much too soon.
"There is no quick fix," said Neville.
"People will be sceptical about SGP, as they are about everything in life.
"But you don't just pluck a player from the top of a tree.
"We know the percentage number of English players is decreasing. The only way to get that back is by supporting the grass roots of the game.
"You may only get the benefits from initiatives like this in the next five years and beyond.
"It is about dealing with children. We want the kids to get the correct information to become better players and better people."