Exclusive rights free agents are players with two or fewer accrued NFL seasons who can only negotiate and sign with their original team.
Mustipher started all 17 games at center last season and has appeared in 26 games with 24 starts over the past two years. He originally joined the Bears in 2019 as an undrafted free agent from Notre Dame and spent his rookie season on the practice squad.
Horsted also joined the Bears in 2019 as an undrafted free agent. The Princeton product appeared in six games with one start as a rookie, catching eight passes for 87 yards and one TD. After spending the 2020 season on the practice squad, he played in seven contests last year, all as a reserve, and caught two passes—both for touchdowns of 19 and 2 yards.
Simmons was selected by the Bears in the seventh round of the 2020 draft out of Tennessee State. He played in his first two NFL games last season, including one start at right tackle Oct. 24 in Tampa.
Take a look at the Bears players who have re-signed with the team to continue their careers in Chicago, players from the 2021 roster who are currently free agents and the players who have signed with other teams.