The left-back was sent to join in with Kevin MacDonald's side as he prepares for a spell on the sidelines.
On the sidelines: Aston Villa defender Stephen Warnock
Liverpool are interested in the England international but have yet to make a formal enquiry as they weigh up alternatives.
Meanwhile, Newcastle want to take Villa's unsettled midfielder Stephen Ireland on loan.
And Villa striker Andreas Weimann has joined Watford on loan until the end of the season.
Villa hit back at Sunderland and deny tapping up Bent before £24m move West Brom want striker John Carew for Blackburn clashAll the latest Aston Villa news, features and opinion
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