The Spanish shot-stopper has earned plenty of praise in recent weeks and was named man of the match as United beat Liverpool 3-0 at Old Trafford on Sunday.
And United captain Rooney has been thoroughly impressed by the way De Gea has performed for Louis van Gaal’s side this season.
“He’s the best keeper in the world,” Rooney is quoted as saying by the Daily Mail. “He’s shown great form and some of his saves are incredible.
“Edwin van der Sar had the best years of his career when he was with us in his late 30s so David has a great future ahead of him.
“If he keeps working hard the way he is, he will have many years at the top.”
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