Walcott is convinced the 21-year-old will be fit for Tuesday in Ukraine.
"Jack is a strong lad. He always wants to play football and I am sure he will be absolutely fine," said Walcott.
And Wilshire added: "I feel good. I don't want to say I'm 100 per cent as I'm always looking to improve.
"But I thought I played ok against Moldova and now hopefully I can get in the team on Tuesday and play well. That's the aim."
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