Arnold (6-0, 190, 4.41) was rated as Ohio's No. 14 prospect in the May edition of Ohio High. He was then upgraded to No. 9 in the July edition.
He shared his thoughts on attending the Ohio State camp.
"It was exciting," he said. "I think I did pretty good. It was just fun being out here and competing with the guys. It was a good experience."
Arnold also attended camps at Eastern Michigan and Michigan, where his father, David, played for the Wolverines.
"I think I did better than I did last week at Michigan," who had a 36-inch vertical leap at OSU. "I did OK with the man-to-man coverage today. I need work on my footwork and just the drills. I need to keep working at it."
Arnold has offers on the table from Eastern Michigan, Akron, Syracuse, Indiana and Illinois.
"I'm looking forward to seeing what Ohio State has to say," he said.
As a junior, Arnold led Copley in tackles on defense. He also had over 20 catches for 500 yards and three touchdowns on offense.
"I worked out at Ohio State as a defensive back," he said. "I've been having more interest lately in playing on offense at wide receiver, but I'll go wherever they need me to play."
Arnold holds a 3.0 GPA. He is featured in the July edition of Ohio High magazine.