Orchard Park, N.Y. — The Buffalo Bills are doing their homework on the quarterback prospects in the 2016 NFL Draft, and Penn State's Christian Hackenberg is a player to which the team has been continually linked.

On Thursday, Penn State held its pro day, and the Bills reportedly had a "large contingent" on hand and were paying close attention to Hackenberg.

Two Bills scouts doing their homework on Christian Hackenberg. They're speaking to Jordan Palmer now. — Onward Sports (@OnwardStSports) March 17, 2016

Early reports on Hackenberg are positive. Bills have a large contingent on hand for the workout https://t.co/K6tzZxfTrH — Tony Pauline (@TonyPauline) March 17, 2016

Hackenberg was supposed to be the cream of the quarterback crop this year. After he stepped on campus as a baby-faced freshman in 2013 and lit up the Big 10, Hackenberg looked like the next big thing at quarterback. A coaching change and offensive line issues derailed what looked like a promising career, though. Hackenberg was either a shell of himself or just regressed to the norm in his final two seasons for the Nittany Lions.

Now there's a dilemma for NFL teams trying to figure out which quarterback they are going to get. Hackenburg looked lost the last two years at Penn State. His pocket presence was shaky, he diagnosed coverage slowly and displayed inconsistent accuracy. But that arm talent didn't disappear, and some are still clinging to his impressive freshman season.

A lot has happened since Hackenberg was an intriguing 18-year-old, though. Some NFL team will roll the dice hoping they can fix his flaws. Considering they have now met with him at the NFL Scouting Combine and his pro day, the Bills are a team to keep an eye on as the draft approaches.