The team made that announcement official Wednesday evening, several hours after the start of the new league year. In doing so, they retained three players who joined the organization as undrafted free agents.
Irving has played in 20 games over the last two seasons, recording one sack in 2018. He has provided depth at outside linebacker and could find an emerging role with the team moving forward.
Robertson-Harris joined the Bears in 2016 and has earned a role on the defensive line in each of the last two seasons. He has played in 29 games over the last two years, recording five sacks in that time.
Coward was signed to the Bears as a defensive lineman but switched to tackle last year. He has appeared in one game.
The Bears didn't tender contracts to safety DeAndre Houston-Carson and long snapper Patrick Scales, making both free agents.