Swift (groin) has missed "significant practice time" recently, Kyle Meinke of MLive.com reports.
Swift has been limited since he left Wednesday's practice due to groin tightness. While the 2020 second-rounder has suited up nearly every day, he hasn't been able to participate much in 7-on-7 or 11-on-11 drills. The Lions haven't yet announced whether Swift will be available for Friday's preseason game against Buffalo, but any limitations presumably would lead to increased work with the first-team offense for Jamaal Williams.