The Los Angeles Chargers could be buyers at the NFL trade deadline for pass-rush help as Khalil Mack's IR stint leaves a short-term void and Joey Bosa shines. With a 3-0 start and a stockpile of draft picks and cap space, the team has ammunition to pursue a big-name upgrade even as the 49ers suffer Nick Bosa’s season-ending injury. The discussion centers on whether the Chargers can swing a deal to lift the edge group and, in turn, boost fantasy value for the defense and surrounding skill players.