Chargers free agent guard Matt Slauson is visiting the Lions on Friday, Ian Rapoport of NFL.com tweets. Slauson was ranked as PFR’s fifth best interior lineman available heading into free agency. 
Slauson, 32, started seven games at left guard the Chargers before being shelved in October with a biceps injury. He also offers previous experience at center. Last year’s starting center, Travis Swanson, is a free agent, so they could be eyeing Slauson to be their new starter in the middle.
Alternatively, Graham Glasgow could be shifted over to center with Slauson displacing Joe Dahl at one starting guard spot. For a complete look at the Lions’ offensive line situation and overall depth chart, check out their page on Roster Resource.