"It was one of the schools I always wanted to go to," Barnes explained.
Barnes camped with Arizona last week and felt he had a chance to earn an offer, but Monday's events caught him off guard.
"It was kind of a surprise," Barnes noted. "I am surprised it happened this early."
Barnes is a unique athlete. He played inside on the defensive line for most of last season, but is projected as a defensive end in college. He was powerful enough that he finished second to USC-bound Everson Griffen in the shotput, but also had a sub 11.5 time in the 100 Meters.
According to Barnes that mix of speed and power translates to the football field.
"I am an explosive, hard worker," Barnes said. "I am very quick off the edge."
At 6-2, 235, Barnes knows that he has to get stronger, while also increasing his speed.
"I want to get stronger, work on my speed and put on size."
Currently Arizona is his only offer, and Barnes did mention that he would listen to other schools if they were to offer, but he stressed that he is not planning on looking elsewhere.
"Right now I am committed to the UofA," Barnes said.