The Los Angeles Chargers announced on Monday that Denzel Perryman would be lost for the season, and on Tuesday they made it official, placing the linebacker on the Reserve/Injured list with a knee injury.

Meanwhile, the Bolts also announced they've signed linebacker Tre'Von Johnson to the active roster to take Perryman's spot. Johnson spent the past month on the Chargers' practice squad.

The 6-2, 232-pound linebacker originally entered the NFL as an undrafted free agent with the Arizona Cardinals in 2017 out of Weber State. He was waived during final roster reductions, and subsequently spent the majority of last season on the Dallas Cowboys' practice squad before being promoted to the active roster in Week 17. Johnson appeared in four preseason games for the Cowboys this summer, registering nine tackles and one pass defensed. After being waived by Dallas, he spent the beginning of this season on the Seattle Seahawks' practice squad.

In addition, the Bolts filled the newly-vacated spot on the practice squad by inking linebacker Jonathan Celestin. A 6-1, 232-pound product out of Minnesota, Celestin had an impressive preseason with the Atlanta Falcons this summer after signing as an undrafted free agent, totaling 22 tackles and 1.5 sacks in four games with two starts. He started all 12 games for the Golden Gophers last season, finishing second on the team with 78 tackles as he received the team's Carl Eller Award (Outstanding Defensive Player).

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