Shawn Kelley rumors: Nationals, Mariners and Diamondbacks the finalists

According to Mark Feinsand, Shawn Kelley isn't a member of the Nationals just yet, and at least three teams are still in the mix to land the reliever.

I'm told Shawn Kelley to Nationals isn't a done deal. As of Monday night, it was down to Nationals, Mariners and Diamondbacks.

— Mark Feinsand (@FeinsandNYDN) December 8, 2015

Kelley is coming off a fantastic 2015 campaign, and should be able to net a significant payday. In 51.1 innings with the Padres last season, he posted a K/9 of 11.05, a BB/9 of 2.63, along with an ERA of 2.45 and an FIP of 2.57.

Consdiering that Jason Motte and Chad Qualls both signed two year deals, Kelley will likely be looking for a three-year deal. He's just 31 years old and has been a valuable reliever since 2011. In 213.1 innings, he's averaged over 10 strikeouts per nine innings, an ERA of 3.46, and an FIP of 3.12.

FanGraphs has pegged Kelley's value at over $6 million the last two seasons, which could mean he's looking at a deal for three-years, for $20-$24 million. Ryan Madson signed with the A's for three-years $22 million, while Joakim Soria has reportedly agreed to a three-year contract for $25 million. Kelley might ultimately sign for a deal within that range, as he has a better track record than Madson, but could be viewed as less valuable than Soria.