Giggs had plenty of talent the first time Neville saw him when the pair were schoolboys.
"Ryan has a God-given talent," said Neville.
"I first played with him when I was 14. He's still the best young player I've ever seen.
"It's astonishing what he could do - the ball was tied to his feet and he could do everything at amazing pace.
"And, it's probably not the first thing you think of when you mention Ryan, but he's so tough mentally and physically very strong.
"He's got an incredible appetite and determination to keep working hard and win things every year."