Richmond said his relationships with head coach James Dickey and assistant Ronnie Hamilton played a big role in decision to go with the Cougars.
"They call me everyday," Richmond told Scout.com. "They basically built a relationship with me over time. They showed me they really wanted me to be at their college."
Richmond, a 6-foot point guard, said there's an opportunity to get a significant amount of playing time early.
"You don't want to go to a college and sit on the bench or not get reps," Richmond said. "I can go in and start. It's a relief at the same time I still have to work for my spot."
Richmond is regarded as a three-star prospect on Scout.com.