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This decision was made official at the start of the new league year Wednesday afternoon. They join a list of 13 players from the Bears' roster who are officially free agents.
A sixth-round pick of the Bears in 2016, Houston-Carson had played in 32 games with the team. Scales joined the Bears during the 2015 season, playing in 21 games. He missed the entire 2017 campaign due to a torn ACL suffered in the preseason.