The 24-year-old has currently played 89 games for the Villans since making his debut in 2009.
Clark is now keen to become a centurion at Villa Park, but insists that he is not fussed how the landmark happens.
"It will be brilliant to get to 100," he told the club's official website. "There's a young group of players here now so not many of them have played that many games, so that will be a massive milestone for me and for my family.
"Obviously I would like to be selected for every game but I have no problem about going on as a sub."
Villa return to Premier League action on November 25 when they travel to Midlands rivals West Bromwich Albion.