Once upon a time (or "2014," if you prefer), the Buffalo Bills annually disclosed the names of all 30 NFL Draft prospects that they would bring to One Bills Drive for pre-draft visits before the picks started being made. They stopped doing that last year, perhaps because fans figured out that they were drafting a high number of guys that they'd brought in on said visits, particularly early in the draft.
Still, agents and draft prospects are often eager to share where they are visiting at this time of the year, so while the Bills may not disclose it this spring, we know that Mississippi State quarterback Dak Prescott will be visiting team headquarters in April. That's according to Chase Goodbread of NFL.com.
The Buffalo Bills, Philadelphia Eagles and Arizona Cardinals have arranged for Prescott to visit their facilities in April, while the Cardinals and Dallas Cowboys have scheduled private workouts for the end of March.
Prescott certainly fits the mold of a prospect the Bills would like: he's big (6'2" and 226 pounds with enormous hands, a trait the team liked in EJ Manuel in 2013), athletic (he ran a 4.79-second 40-yard dash and had an 11'6" broad jump at the Combine), clean off of the field, and is coming off of a tremendously productive career as a player in the SEC (62.8 percent completions, 9,376 yards, 70 touchdowns, and just 23 interceptions as a passer, with 41 more touchdowns and 2,521 yards as a runner).
The Bills are widely expected to draft a quarterback sometime in the early to mid rounds of the 2016 NFL Draft, with the idea of developing him in Greg Roman's offense for a year or two behind starter Tyrod Taylor and backup Manuel - both of whom will be free agents after the 2016 season concludes.