The team needs to come up with a new name, new colors, and new logo.
When the Seattle Sonics moved to oklahoma, the city took out a trademark on the Sonics name and apparel. Whenever the NBA returns to the evergreen state, it'll come back as the Sonics.
Same with the original Cleveland Browns moved to Baltimore. The city kept the name and had their team back just a few years later.
The Chargers belong to the 619. I think they're be back. Let Spanos think of a new brand.