Former Liverpool boss Gerard Houllier is impressed by English football's St George's Park.
Houllier, 65, took charge of Paris Saint-Germain in 1985, the same year the French academy at Clairefontaine was originally signed off and he played a key role in its development.
"To me it is a massive achievement and improvement for English football," he told Press Association Sport.
"We entered Clairefontaine in 1988 and the team became World champions in 1998, it is not only a coincidence.
"I think once you have a tool of that dimension it brings unity to the national teams, even referees can train there, national teams from youngsters to the first-team."