Baker has been sidelined since sustaining an ankle injury at Arsenal on the opening day of the Barclays Premier League season, while fellow defender Luna picked up a knock in Saturday's defeat to Liverpool. Charles N'Zogbia (Achilles) remains a long-term absentee.
Manager Paul Lambert has vowed to send out a strong side as Villa look to make up for the disappointment of last season's semi-final exit to lower league Bradford.
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- Barclays Premier League