Date of Birth:26/09/1989
Height:6' 2" (188cm)
Weight:12st 0lbs (76.2kg)
Former boss Martin O'Neill gave the defender his debut in a 2-0 win over Fulham in August 2009.
Harrow-born Clark joined the Villa academy as an 11-year-old.
In the 2007-08 season, the defender captained the U18s to the Premier Academy League title.
He quickly progressed through the ranks and was given a squad number for the following campaign.
In the same season, Clark was an unused substitute for a UEFA Cup tie at CSKA Moscow.
He also earned silverware with the reserves and captained the youngsters to the Premier Reserve League South title.
Under Clark's leadership, the club also earned their maiden Reserve League trophy, as they also saw off PRL North winners Sunderland in the play-off final.
Clark was a key member of the England U19 team through their 2008 European qualifying campaign, playing five of the six matches - netting one goal but unfortunately missed the tournament with an ankle injury.
He was promoted to the U20s, again wearing the captain's armband.
In 2009, Clark was approached by the Football Association of Ireland regarding switching allegiance due to his Irish parents.
He has since gone on to make 11 appearances for the Irish national set up.
In 2014-15 so far, he formed a very encouraging partnership with Jores Okore in the back four - and scored in the 2-1 win over Leicester in December 2014.
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