The Cyclones offered him a scholarship after their event on Saturday. The Hawkeyes told him that they'd be in touch. He remained uncommitted as of Monday afternoon with trips to Harvard and Princeton scheduled for the end of the month.
"I'm not in a rush to decide. I want to consider all of my options and then decide by early August. I'll take it with what I get and evaluate Iowa State and my other options," Nelson said.
The 6-foot-7, 215-pound Nelson said that the Cyclones sit in great position with him as a Big 12 program that showed the confidence in him to offer at camp.
"It wasn't a surprise but I can't say I expected it either. I knew I had an opportunity to get an offer if I performed well enough. I think I ran well and they said they like my frame. They think I can put on weight and keep my athleticism," he said.
Nelson said he enjoyed his time in Iowa City on Sunday. The Waukee senior-to-be said he performed well.
"It was good. It was good to work with Coach Reese Morgan and experience all of their coaches more. It was nice to be around the program for a while and get a better feel for it," he said.
Nelson said he ran sprints and went through agility drills for two hours at Iowa State then they worked out in pads for a couple more hours. Iowa did not test speed or agility of linemen, he said. Hawkeye coaches worked with the athletes in equipment for about three hours.
"The Iowa coaches weren't too specific with me about how they felt about me. They said they were impressed with that I did there on Sunday and that they would stay in contact with me. They said they looked forward to talking to me more," Nelson said.
Nelson has been debating between playing football or basketball in college. He's still running AAU hoops this summer with Martin Brothers. He has a scholarship offer from Truman State.
"I'm definitely leaning towards football with a Big 12 offer there and only a Division II offer in basketball," Nelson said.