Starters: Jared Allen and Lamarr Houston
Phil Emery jumped out of the gate in free agency, signing Lamarr Houston to a five-year deal on the first day of free agency, via ChicagoBears.com.
He avoided the franchise tag from Oakland, and at just 26 years old, he is in the prime of his career. He plays well against the run at defensive end and can cause havoc rushing from the inside on passing situations.
To complement Houston, the Bears signed veteran Jared Allen to a four-year contract in late March, via ChicagoBears.com.
A five-time Pro Bowler, Allen has averaged 14.5 sacks over the past seven seasons, never registering fewer than 11 sacks during that time.
The Bears struggled at sacking the quarterback and stopping the run in 2013, and the additions of Houston and Allen should help rectify that problem in 2014.
Backups: Willie Young, David Bass and Cornelius Washington
A few short days after signing Houston to a five-year deal, the Bears signed former Detroit Lion Willie Young to a three-year deal, via NFL.com.
Bleacher Report's Zach Kruse wrote that Young was the "steal of free agency," comparing the amount of money Young received in the deal to his production on the field.
Young will be a key piece of the defensive end rotation and has the ability to set the edge against the run but can also be effective at getting after the quarterback.
Allen, Houston and Young are expected to get most of the snaps at defensive end in 2014, but there are currently four other ends on the roster who will be fighting for an opportunity.
David Bass and Cornelius Washington remain from the 2013 campaign and will be competing with Austen Lane and Trevor Scott for a spot in the rotation.
In February the team signed Lane to a one-year deal, via ChicagoBears.com. A fifth-round pick out of Murray State in 2010, Lane has appeared in 30 career games with 17 starts in four seasons with the Jaguars and Lions, register 46 tackles, three sacks and one forced fumble.
Lane has the versatility to play inside and outside and was even asked to drop in coverage when he was with the Lions last season.
The team inked veteran Trevor Scott in early March to a one-year deal, via ChicagoBears.com. Scott has registered 94 career tackles, 16.5 sacks, 21 tackles-for-loss, two forced fumbles and one pass breakup over six NFL seasons.
While Lane and Scott bring experience to the position, David Bass and Cornelius Washington bring youth and untapped potential.
A seventh-round pick of the Oakland Raiders, Bass was claimed off of waivers by the Bears prior to the start of last season, and he finished with 23 tackles, one sack and one interception in 12 games. He showed flashes at times and could solidify a spot on this roster with a strong training camp.
Washington, a sixth-round pick in 2013, ended up appearing in just two games for the Bears even though the team struggled at getting after the quarterback throughout the season. He has speed, size and athleticism, and the Bears will be hoping that he is just a late-bloomer.