Buffalo announced the signing on its official website.
"I can't tell you all how grateful I am for the opportunity, how happy I am for myself and my family," White said. "I'm looking forward to earning all my stripes and earning the respect of the vets and of the guys that are here."
After the Bills selected White with the 27th overall pick, his first NFL contract was largely a formality.
In 2014, The MMQB's Andrew Brandt explained how the collective bargaining agreement between the NFL and NFL Players Association limited how much rookies can earn based on when they were drafted. In addition, first-round picks receive four-year deals with an option for a fifth year—with that salary locked in as well.
Spotrac provided projections for the particulars of White's rookie deal: Total Value ($10,091,110); Signing Bonus ($5,478,989) and 2017 Cap Hit ($1,834,747).