The Bills signed DiNucci on Monday, Tom Pelissero of NFL Network reports.
With Shane Buechele set to miss extended time due to a neck injury he sustained in Saturday's preseason loss to the Bears, the Bills will bring in DiNucci to serve as the third quarterback behind Josh Allen and Mitch Trubisky. DiNucci was cut by the Broncos in May after Denver traded for Zach Wilson and selected Bo Nix 12th overall in the 2024 NFL Draft.