According to at least two source, the Samsung Lions have decided to allow Seung Hwan Oh (31) "to test the overseas market."
Samsung will allow Oh Seung-hwan to test overseas market
... Oh Seung-hwan is officially a free agent in Korea teams from other leagues must bid for the rights to negotiate a deal with the righty. And while, the closer has been a crucial part of the team's success the team will allow him to test the overseas market with many experts stating that the posting fee will be similar to what the L.A. Dodgers paid for Ryu Hyun-jin. Despite Japan being the most likely destination for Oh, many Major League teams are looking into the closer, as well.
Source: Arirang News 11/5/2013
Oh Seung-hwan to Start Seeking MLB Club
Samsung Lions' relief pitcher Oh Seung-hwan will start trying to negotiate a deal with foreign clubs as he looks to potential suitors in Japan and the U.S.
Oh is hoping to find a place for himself in U.S. Major League Baseball, where several clubs have reportedly expressed interest in him. But he apparently sees Japan as his most realistic next destination.
Source: The Chosunilbo 11/5/2013
The New York Yankees are among the MLB teams interested in Oh. A number of teams, including the Hanshin Tigers, Chunichi Dragons, Rakuten Eagles, and Orix Buffaloes, have been mentioned as possible destinations in Japan (of the four, the Tigers have made the most amount of noise).