Barry was disciplined by Martin O'Neill at the start of the season after criticising the Villa boss, but he has since featured in Villa's opening two Premier League games and also scored in his side's 4-1 win away at FH Hafnarfjordur in the Uefa Cup second qualifying round first leg.
O'Neill keen to add to Villa squad
That appearance means he is ineligible to play for any other club in Europe during the group stages, either in the Uefa Cup or the Champions League.
O'Neill has repeatedly stated his reluctance to sell the England international and speaking ahead of the second leg return at Villa Park he said he remained confident Barry would stay at the club.
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