Duvernay-Tardif, who has a doctorate in medicine, spent 2020 working at a long-term care facility in Canada.
He joined his teammates at a minicamp press conference on Tuesday in which he spoke about returning to football.
"We have a tremendous amount of depth this year and I'm excited to contribute," he said told reporters, according to Fox 4 KC reporter Jessica Eley.
This is a developing story. Please check back for more details.