Chambers recalls facing Walcott at Southampton when he was just 10 years old.
"At the age of seven Southampton came in for me, and I went to play at the development centre," Chambers said.
"I just went along with it and enjoyed every moment.
"I trained with Theo Walcott at Southampton when I was about 10. He was on the wing against me.
"At that age, I was looking up to him and just hoping I could be as good as him."
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