Villa are optimistic they have beaten off the challenge of Liverpool for the services of the PSV Eindhoven player who will cost around £4million.
O´Leary told PA Sport: "Martin is off to America on the day of the West Ham game (September 12). We will know then what is required when he sees the surgeon out there. But I must stress that it is not a career-threatening situation. Martin will be able to play again. It is not make or break."
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