The San Diego Chargers parted ways with four players on Thursday, releasing LB Donald Butler, RB Donald Brown, LB Kavell Conner and LB Chi Chi Ariguzo.

Butler appeared in 71 games with 62 starts over six seasons in San Diego. Originally a third round pick (79th overall) in the 2010 NFL Draft and a team captain in 2013, he totaled 432 tackles, 33 tackles for loss and 7.0 sacks over his career. He recorded 54 tackles with five tackles for loss in 16 games last year while making nine starts.

Brown spent two seasons with the Bolts after a five-year stint with the Indianapolis Colts. He ran for 229 yards and one touchdown in 10 games last season after rushing for 223 yards in 2014.

Conner joined the Chargers in 2014 after four seasons with the Colts. He appeared in all 16 games with seven starts his first year in San Diego, tallying 68 tackles, two tackles for loss, one sack and a career-high 16 special teams tackles. Conner played in 10 games last year with three starts, notching 19 tackles and two tackles for loss.