Giggs has told the younger players that Van Gaal's appointment has given them a golden opportunity to make the breakthrough.
Giggs told the Manchester Evening News: "It's Louis's philosophy to play young players.
"To give Xavi, Iniesta, Muller, Kluivert, Seedorf a chance. It's his track record - he develops young players and gives them a chance.
"I think he has been impressed by the quality of the young players as well. It's a chance for them. I always say if you've got a chance to play for Manchester United you've got to take it.
"That's what I did. That's what a lot of others have done."
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