Bears defensive end Austin Booker sacks Miami Dolphins quarterback Quinn Ewers, causing a fumble during their game earlier this month in Chicago. AP

The Bears made a flurry of roster moves Thursday afternoon.

The team placed second-year defensive end Austin Booker on the reserve/injured list. He’ll miss at least the first four games of the season because of the designation. Booker had been off the field for over a week after he suffered a knee injury on a special teams play in the Bears’ preseason game against the Buffalo Bills.

Booker had a strong start to his second preseason as the Bears wanted to see whether last year’s fifth-round pick could take a big step this season. He was a major disrupter in the two preseason games with four sacks and one forced fumble.

The Bears also broug

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