"I've been to Iowa a lot," Butler said. "I know a couple of kids (non-football players) that go there. I went to a couple of games last fall when I went to visit them. I loved the games. The games were awesome."
Although he hasn't received a Hawkeye offer, the 5-foot-9, 200-pound Butler impressed the Iowa coaches at the camp.
"It was a great experience," he said. "I loved the locker rooms. Being able to play on Iowa's field was a great experience.
"The running backs coach (Lester Erb) said that he had a lot of interest in me. He said he will be following up and watching me this year and said we should stay in contact."
Butler scored 16 touchdowns as a sophomore and piled up more than 2,000 all-purpose yards.
"I think I can do it all," he said. "I'm a change-of-pace back, but I can also supply power if I need it."
Butler said that he'd like to get his 40-yard dash time under 4.5 seconds. His personal best is 4.58.
Butler, who also camped at USC this summer, said his number one goal for this coming season is to lead his team to a state title. Personally, he's shooting to rush for at least 2,000 yards and improve his blocking.
Then, he'll concentrate more on recruiting.
"It's going to come down to how comfortable I am," Butler said of what he's looking for in a school . "It will be how much I likes the campus and the coaches."
Butler played for Bartlett (IL) High last season. He has transferred to Wheaton (IL) Sr. Francis for the coming school year.
Butler said he's hearing a lot from Iowa State and Western Illinois.