Even after signing Dan Haren earlier in the offseason and agreeing to extend Clayton Kershaw today, the Dodgers hope to add another arm to their staff, report Ken Rosenthal and Jon Paul Morosi of FOX Sports (Twitter links). Masahiro Tanaka is a possibility, but would be an ownership call, while Bronson Arroyo is also on the team's "short list" of options.
Club GM Ned Colletti has said that, despite inking Haren, another starter addition remained possible. The rotation presumably will include Kershaw, Zack Greinke, and Hyun-jin Ryu in addition to Haren. For the fifth spot, absent a new signing, the club would be expected to host a Spring Training competition between veterans Josh Beckett and Chad Billingsley.
While Beckett and Billingsley remain question marks due to injury issues, the two are owed a combined $27.75MM by Los Angeles next year. Presumably, either or both could become trade candidates in the event that another starter is brought in.