Another coach in the league, New England Patriots co-offensive line coach Cole Popovich, also won’t be with his team in 2021 in a decision related to the COVID-19 vaccine and NFL guidelines, league sources confirmed to ESPN.

The vaccine is required for all Tier 1 staff, including coaches, front-office executives, equipment managers and scouts. Players are not required to receive the COVID-19 vaccine but will face strict protocols during training camp and throughout the season that vaccinated players will be able to forgo.

In a memo released by the league this summer, the NFL said any unvaccinated Tier 1 staff member must provide a valid religious or medical reason for not receiving the vaccine. Losing Tier 1 status prohibits coaches from being on the field and in meeting rooms and having direct interactions with players.