Third-year Lions linebacker Steve Longa did, in fact, suffer a torn ACL that will end his season, Kyle Meinke of MLive.com reports. Longa tore the ligament while chasing down Giants quarterback Kyle Lauletta and is expected to be placed on IR Monday. The Lions weren’t going to use Longa as a starter — Jarrad Davis, Christian Jones and Devon Kennard are entrenched as their first-string ‘backers — but the former UDFA was a key part of Detroit’s special teams corps. This may open up a spot for Miles Killebrew, a former safety who’s been working with the Lions’ linebackers in recent weeks. Killebrew also serves as a regular on special teams.

Here’s the latest out of the NFC, moving to another NFC North team’s injury situation.

• The Bears received better news regarding a young player’s injury. Adam Shaheen required a cart to leave the field during Saturday night’s Bears-Broncos game thanks to a first-quarter setback. However, Ian Rapoport of NFL.com tweets the second-year tight end is not believed to have suffered a serious injury. The 2017 second-rounder is dealing with a low ankle sprain, per Rapoport. Although more tests will be in store for the small-school product, Shaheen has a chance to play in Week 1.
• Sean McVay said (via Lindsay Thiry of ESPN.com, on Twitter) Junior Galette‘s Rams visit will take place Monday. Galette is now 30 and a few years removed from his peak — back-to-back 10-plus-sack years with the Saints in 2013-14 — but he did play in all 16 Redskins games last season after missing the previous two years with injuries. The Rams’ efforts to restock their cornerback contingent and add Ndamukong Suh induced some cutbacks, and the Super Bowl contender’s edge defender situation is perhaps a vulnerable spot midway through the preseason.
• Another NFC West team has questions on the edge, and Kyle Shanahan (via Matt Maiocco of NBC Sports Bay Area, on Twitter) still has Elvis Dumervil in mind as a contingency plan in case the second-year HC deems the 49ers as being too light on defensive ends. Shanahan said earlier this offseason the 12-year veteran probably wouldn’t need much preseason work to be effective, so San Francisco still remains a possibility for the now-34-year-old edge player. Dumervil, who began his career under Mike Shanahan and alongside John Lynch in Denver, led the 49ers with 6.5 sacks last season. No other 49er registered more than three.
• More running back injury trouble’s come the 49ers’ way. With Jerick McKinnon and No. 2 back Matt Breida out until Week 1, 2017 fourth-rounder Joe Williams fractured a rib and suffered a “very bad” bone bruise, per Eric Branch of the San Francisco Chronicle (on Twitter). Shanahan said Williams will miss Week 1. Shanahan urged Lynch to trade up to select Williams, but this setback figures to pose a problem for his chances of making an impact this season. The 49ers, who also lost offensive lineman Erik Magnuson to a hamstring strain that will shelve him until possibly October, are going to make IR decisions regarding this duo this week (Twitter links, via Maiocco and the San Jose Mercury News’ Cam Inman). A 2017 UDFA out of Michigan, Magnuson played in four games as a rookie and started two. If the 49ers place either on IR before roster-cutdown day, they cannot use one of their IR-return spots on them.
• Second-year UDFA Rickey Jefferson will not play for the Saints this season. The defensive back tore one of his ACLs in New Orleans’ second preseason game, Nick Underhill of The Advocate reports. The LSU alum did not play last season and latched on with the Saints in January via reserve/futures contract.