The Dolphins and Poyer agreed to terms on a one-year, $2 million contract Tuesday, Adam Schefter of ESPN reports.
The Bills will release Poyer on Wednesday, Adam Schefter of ESPN reports.
Poyer finished the 2023 regular season with 101 total tackles, including 1.0 sacks, four passes defensed and one forced fumble over 16 games.
Poyer finished Sunday's 27-21 win over the Patriots with 10 tackles (eight solo).
Poyer (leg) was a full participant in Friday's practice.
Poyer (leg) will not practice Thursday, according to head coach Sean McDermott, Alaina Getzenberg of ESPN.com reports.
Poyer had eight tackles (three solo) and two pass deflections in Thursday's 24-18 win over the Buccaneers.
Poyer (shoulder) was a full participant in Thursday's practice.
Poyer (knee) was a limited participant at practice Wednesday, Chris Brown of the Bills' official site reports.
Poyer (knee) has been ruled out for Sunday's game against Miami, Alec White of the Bills' official site reports.