"It was a multitude of things at Clemson," Chillious said. "Cheyenne's personality and (Coach Purnell's) wasn't going to work. But at the same time, everything left on a good note."
Moore, who averaged 6 points and 2 rebounds in starting 17 games as a freshman, will sit out this season and have three years of eligibility remaining.
George Washington and Providence were considered potential suitors but the Colonials struck quickly.
"With GW, it was one of the schools that Clemson helped call for him right away," Chillious said. "Plus, I've known Roland Houston a long time and he's one of the best in terms of looking out for the kid's needs."
Houston, an assistant coach, stayed behind to conduct Moore's visit while the team traveled to Australia for a series of pre-season games.
"He was down that area when he was with me at West Nottingham plus it'll be pretty attractive for him to be going down there and playing on the wing with Regis Koundjia," Chillious said of Moore's decision.