Campbell is expected to miss game action after spraining his right knee during Sunday's game versus the Raiders, Cameron Wolfe of NFL Network reports.
Per Wolfe, the injury isn't believed to be as bad as the MCL tear Campbell sustained back in November of last year, and he hasn't been placed on the Patriots' injured reserve list as of Tuesday. Until he's back in football shape, rookie first-rounder Caleb Lomu projects to step in at left tackle.