The San Francisco 49ers are not expected to exercise the fifth-year option on Aldon Smith for 2015.

Smith was arrested Sunday at Los Angeles International Airport on charges of a false bomb report.

In November, he pleaded not guilty to three felony counts of illegal possession of an assault weapon, stemming from an incident at a party at his home in 2012.

Smith also missed five games this past season while spending time in an alcohol treatment center. 

Smith still finished with 12 sacks despite the five-game absence.