The Bills announced the signings Monday afternoon of cornerback Corey White, linebacker Zach Brown and wide receiver Leonard Hankerson.
The signings of Brown and Hankerson were previously reported. The team hosted Brown and White on Monday.
White, 25, was a fifth-round pick of the Saints in 2012. He played three seasons with the Saints and split last season between the Cowboys and Cardinals.
Brown, 26, signed a one-year deal with the Bills. He started five games and played in all 16 last season for the Titans.
Hankerson was claimed via waivers by the Bills during the final week of last season but his contract expired after the season. Hankerson, 27, has 107 career receptions and nine touchdowns.