According to Pro Football Talk's Evan Silva, Wisconsin center Peter Konz has visited the Bengals in the weeks leading up to the draft. Konz is considered by many analysts to be the top center in this year's draft class and could be considered a borderline first-round pick.
The Bengals signed center Kyle Cook to an extension before the 2011 season so they're probably not looking for a new starting center in the draft. However, Cook doesn't have a lot of depth behind him and if something was to happen to him during the season, the Bengals could be in a situation where they're short handed on the offensive line. If Konz were to fall to them somewhere in the third round or later, the Bengals may think about selecting him to add depth to the line and for the future of the position.
However, the Bengals may be interested converting Konz into a guard in the NFL. They are in need of a guard and if they feel that Konz could make the transition, they may look to have him fill the void between Cook and Andre Smith at right guard. If that's the case, Konz could be targeted by the Bengals in the second or maybe third round.