After spending the past five seasons as the Chargers running backs coach, Clarence Shelmon has agreed to contract terms to become the team?s offensive coordinator. The team is expected to finalize the contract with Shelmon late next week. He replaces Cam Cameron who last week became the head coach of the Miami Dolphins. ?Clarence has a strong familiarity with this offense and he?s a terrific teacher,? Head Coach Marty Schottenheimer said. ?When you look at the players that he has coached, not only here but going back to Emmitt Smith and Chris Warren, he?s had a lot of success. It made all the sense in the world to me to go ahead and designate him as the offensive coordinator.?