Keihn, who is 6-foot-3, 225 pounds, said he will make a trip to campus to learn more about the program.
"I plan on going, and if not this spring, than this summer, most definitely," Keihn said. "I'd be an outside linebacker, and play defensive end sometimes, but most schools are recruiting me as an outside linebacker."
The Irish are looking at Keihn to play both roles, but with a bigger emphasis on the linebacker.
"I don't mind where I play," he said. "I feel I would be comfortable on the line or at outside linebacker. I feel like I can do either. No matter where they put me, I would be willing to work hard."
Keihn is anxious to learn more about the Irish.
"I know they have a great academic reputation up there and a great football team," he said. "That's what I know about them. It's a great academic school, a great football program and a great engineering school, and that's what I want to be."
He is being recruited by Irish assistant coach Scott Booker, and the two are just starting to build a relationship.
"I've talked to him," Keihn said. "He came to a practice last year and he came by the school a couple of times. He's a nice guy, a great guy."
Keihn registered 65 tackles and 14 sacks as a junior, and he holds more than a dozen offers.
"Academics are going to be a big part of it," Keihn said. "After that, it's going to be the coaches on the team and how much we get along, and also if I get along with the kids in the school, not just the football team.
"But I like all the schools I have offers from right now. I'm not ruling anyone out."