According to Ken Rosenthal, the Dodgers are in talks with the Reds to acquire Aroldis Chapman, and there appears to be a sense in the organization that the trade will happen.
Source: There is growing confidence in the Dodgers organization that they're going to be able to finish Aroldis Chapman trade.— Buster Olney (@Buster_ESPN) December 6, 2015
As of now, it's unclear as to what the prospect package would look like, but it's nearly impossible to imagine the Dodgers parting with Julio Urias or Corey Seager for Chapman. Jose De Leon could potentially be the center piece of a deal, but at this time that's purely speculation.
While the Dodgers already have Kenley Jansen, one of the best relievers in baseball, adding Chapman would help fortify their bullpen for the 2016 season. Los Angeles ranked ninth in MLB in reliever fWAR (4.5), but Jansen accounted for 37 percent of their total value.
Chapman has been one of the most dominant relievers in baseball since joining the league in 2010. In his career, he has a K/9 of 15.4, an ERA of 2.17, and an FIP of 1.97.