There are 3 schools of thought on that:
1) No - Venables did something when he was an assistant at KSU that not only was so depraved that he forfeited any future as a HC at ANY college program, but was also so super secret that no one "in the know" will share the details. If you bring it up on a message board, people will figuratively nod their heads in acknowledgement of the deed, but then refuse to answer when asked directly. People know more details about the Illuminati than they do about the Venables transgression of the '90s. Common assumptions are a hardcore drug problem or sleeping with a student/the dean's wife/player.
2) No - Venables is happy as hell being the highest paid DC in the country at Clemson and has no urge to ever sully a stellar career by wanting to be a head coach.
3) Yes - he's on the short list of coaches KSU would want to hire as Snyder's replacement.