Zaha recently returned to the Under-21s after being picked for the senior squad.
"Wilfried has had an incredible few months," said Southgate.
"He just needs to draw breath and adjust to changes in his life. He's an exciting player. I'm sure he has the talent to get back in the seniors.
"One of my strengths is dealing with young people. I want players to want to come and play for England, to feel free to express themselves and not be afraid of making mistakes in an environment where the shirt hangs easily on their backs."
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