The Steelers' formidable defense will be without one of its key pieces for the remainder of the season.NFL Network's Aditi Kinkhabwala reported Sunday evening, per an informed source, that inside linebacker suffered a torn ACL in the team's 38-7 Week 6 win against the Browns.Bush exited with a little under 2:30 remaining in the first half Onyeka Okongwu Jersey of Sunday's contest with a non-contact knee injury following an attempt to break up a pa s. The 22-year-old immediately went down and ended up being helped off the field and into the locker room. He did not Evan Turner Jersey return to the game.Mike Tomlin revealed after the game that Bush sustained a "significant knee injury" though the extent was unknown at the time. addre sed the potentially devastating diagnosis at the start of his post-game media se sion, telling reporters, "I just want to send out my thoughts and prayers to Devin and his family and everything he's going through right now. It just makes you sick when someone, a young player, skilled like that, gets hurt."At the time of his departure, Bush led the team with five tackles and teamed Treveon Graham Jersey up with defensive end on a sack of late in the first quarter.Losing Bush's versatility and leadership is a huge blow to one of the league's most stifling defenses. After turning in an impre sive rookie season, the 2019 tenth overall pick picked up where he left off through the first five games, compiling 26 tackles, a sack Vince Carter Jersey and three pa ses defensed.Outside of Bush, the Steelers are thin at the position. , who's primarily spent time on special teams this season, filled in for Bush Tony Snell Jersey and contributed five tackles (one for a lo s).How defensive coordinator Keith Butler will compensate for the lo s of the defensive stud remains to be seen. Regardle s of what adjustments are made, Bush's absence definitely leaves a noticeable hole in the lineup.