The Kings agreed to a new one-season deal with defensive-minded defenseman Keaton Ellerby on Thursday, the day before teams can begin signing free agents. Ellerby played 35 games with the Kings after they acquired him from the Florida Panthers on Feb. 7 for a fifth-round pick in the just-completed draft. He had three assists and 16 penalty minutes during the regular season. He also played five games during the playoffs. The 6-foot-5, 220-pound Ellerby also played nine games during the lockout-shortened 2012-13 season with the Panthers, but did not record a goal or an assist. Ellerby, 24, figures to be a depth defensemen for the Kings again next season.