More: Purdue 2020 offers | Purdue 2020 commitments

Collin Sullivan says he hears about Purdue often, from former high school teammate Garrett Miller, a Boilermaker tight end signee and "one of my best friends," Sullivan said.

But the Rivals.com four-star wide receiver and Rivals250 member from Round Rock, Texas, said he had more reasons than just Miller's referral for wanting to visit, which he did this past weekend for Purdue's spring game.

"I already knew about Coach (Jeff) Brohm and his staff and that they're highly respected, and just the school itself is highly respected, a good education, so there's lot of reasons to go see it," Sullivan said. "They have a lot that's worth going there for.