When asked which program he has grown closest to in that time, Jackson quickly replied, "Definitely Nebraska."
"They invited me up there for the Fresno State game, and I loved the atmosphere. It was awesome."
The 6-foot-4, 230-pounder has also made unofficial visits to Oklahoma, Missouri, Kansas, Kansas State, and Notre Dame.
He is not sure if he will be making any more visits in 2011, but is certain he will be attending University of Hawaii's junior day in the spring.
"I'm interested in them," he noted.
He noted he is not sure what exactly he is looking for in a program. He hopes visiting around will help him figure it out.
With a loss to Blue Springs South last weekend, Gilley saw his junior campaign come to an end with the 4-6 regular season.
As disappointed as he was about it, he said it will be what drives him throughout the offseason.
"I'm already ready to get to work for next year."
With his size, he will focus heavily on increasing his speed to create "the total package."
"I'm at a 4.9 (forty yard dash) right now, but I want to get that down."
Stay on Scout.com for more on the defensive star's developing recruitment.