Aston Villa manager Paul Lambert admits he needs to further bolster the strength of his squad.

Villa brought in nine new signings during the summer at a net outlay of £21.7million - the fifth-highest of any Barclays Premier League club during that transfer window. It took the transfer outlay of the midlands club to a net £70million during the past five seasons under owner Randy Lerner.

But Villa are still stretched in certain departments and currently have four centre-backs on the injury list in Richard Dunne, Ciaran Clark, Nathan Baker and Chris Herd. When asked about his transfer plans, Lambert said: "The squad needs to get bigger as well. That is important as well. That's normal."

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