The news of Swann’s concussion was first reported by ESPN’s Adam Caplan.
Swann, a 23-year-old rookie, had already sustained two concussions earlier this season, missing two games due to the first from Week 5 and four games because of the second from Week 8.
Sunday’s 24–17 victory over the Tampa Bay Buccaneers marked Swann’s first game back after sustaining his second concussion.
Swann, who played the entire first half against the Bucs, took a knee to the head while trying to make a tackle in the second half and exited the game. He did not return to the field Sunday.
The fifth round selection in the 2015 draft out of Georgia has played in seven games for the Saints this season, recording 22 combined tackles.
The Saints (5–8) host the Lions (4–9) in Week 15 at the Mercedes-Benz Superdome.