Melvin Gordon, a teammate of Philip Rivers for the last five seasons, believes the quarterback will sign with the Indianapolis Colts this offseason.

"I think he goes to the Colts," Gordon said. "I don't know, that's just my thought."

The running back is also set to become a free agent.

Colts offensive coordinator Nick Sirianni previously worked as a Chargers assistant for five years.

"He has [connections]," Gordon said. "Nick ... he came from here, we had him, and he's the offensive coordinator there. They run the same playbook, so it'd be easy, he could come right in and he could be telling guys what to do, he knows what's going on already."