"I visited George Mason two weeks ago," Allen told Scout.com. "I was supposed to visit SMU this past weekend and I decided I was comfortable with my decision and I chose George Mason.
Allen averaged 19 points and seven assists for STM. He transferred into Jere Quinn's program following stints at DeMatha and Oak Hill. Allen said the Patriots sold him on their plan for his abilities.
"They see me being a point guard. I think I'm ready for that. This whole year I played point guard at St. Thomas More and that was the first time I played the whole year there. I think I did pretty good at it."