The pass rusher the Chargers signed Thursday wasn't Dwight Freeney. One day, it still could be. Freeney left San Diego without having signed a contract, as outside linebacker Thomas Keiser was instead the one to ink a deal. Those two players are viewed internally as two separate situations, as the arrival of Keiser is considered to have no affect on the team's pursuit of Freeney. The 33-year-old's two-day visit ended Thursday, and those familiar with it describe it as having gone well. San Diego remains interested in adding Freeney to its outside linebacker corps. Upgrading the edge rush became the Chargers' No. 1 player personnel priority this week after outside linebacker Melvin Ingram tore the anterior cruciate ligament in his left knee. The team is preparing to be without him for the 2013 season.