Clark, 23, conceded that Richard Dunne, who is currently in rehabilitation from a groin surgery, will be a threat to his place when he recovers from injury.
“Everyone has got to (a threat), to be honest. There’s a lot of good players in the squad now who can play all across the back four. When you look at the squad now, no-one can take a place for granted at all,” added Clark.
“There’s so much competition and you can see that every day in training. Everyone wants a place in the squad and that can only be good for Villa."