Scot not worried by criticism of his new £18 million man and insists he had "no chance" with opening goal in last weekend's Community Shield against Manchester City
The 20-year-old conceded twice at Wembley as United came from behind to beat rivals Manchester City 3-2, the first a Joleon Lescott header from a free-kick that Ferguson did not think De Gea had a chance of claiming.
"When free-kicks come in and defenders are converging, the goalkeeper has no chance," Ferguson said ahead of his side's match at the Hawthorns.
"All it needs is a fraction of a touch and the goalkeeper is dead. If he comes for it, he ends up looking silly."
The Red Devils supremo also pointed out that similar questions had not been raised around Joe Hart, who also conceded from a set-piece when Ashley Young whipped in a ball sent home by Chris Smalling.
"The delivery was so good. It was interesting there was no criticism of Joe Hart for our first goal, yet it was exactly the same type of goal," he said.
"De Gea will be fine. He will play on Sunday. That is the reason we spent £18 million on him."
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