According to Dave Birkett of The Detroit Free Press, the Bengals, along with representatives from four other teams, are in attendance at Wayne State's pro day.
Wayne State, which is in Detroit, doesn't have a lot of players heading into the NFL draft. In fact, there is only one in ESPN's database: offensive tackle Joe Long, who is the younger brother of Jake Long. Joe won the Gene Upshaw Award as the top Division II lineman over all other offensive and defensive linemen.
Long is 6-foot-5 and weighs 308 pounds, which is small for an NFL tackle, but with some work and extra weight, he could be a late-round pick that works his way on the field.