Currently, the universe of teams that may relocate consists of three: the Rams, Raiders, and Chargers. The Raiders’ current lease expires after the 2014 season. The Rams can exit without penalty after each season. The Chargers can leave by paying a relocation fee that shrinks every year.
All three teams previously played in Los Angeles. The Rams and Raiders left after the 1994 season. The Chargers played there in 1960, before moving to San Diego the next year.