Tuttle finished the regular season with 43 tackles (19 solo), including a half sack, and five passes defended in 17 games.
Tuttle is expected to sign a three-year, $19.5 million deal with the Panthers, Adam Schefter of ESPN reports.
Tuttle tallied nine tackles (two solo), a half-sack and pass defensed in the Saints' 20-10 loss to the Buccaneers on Sunday.
Tuttle signed his restricted free agent tender Thursday, Adam Schefter of ESPN reports.
Tuttle compiled 28 tackles (17 solo) and two passes defended across 13 regular-season games in 2020.
Tuttle accounted for 18 tackles (eight solo), 2.0 sacks and an interception during the 2019 season.