Throughout the offseason, Sporting News will be keeping an eye on the latest Hot Stove news and rumors.THE RUMOR: Looking to rebuild their bullpen after a dismal 2014, the Nationals are looking to trade relievers Jonathan Papelbon and Drew Storen.MORE: The worst baseball decisions of 2015REPORTED BY: ESPN's Jayson Stark THE DETAILS: It was reported in Octoberthat the Nats wanted to tradeStoren and he still remains the likely candidate to get shipped, but the team wants to addReds closerAroldisChapman and/orfree agent reliever DarrenO'Day,amongothers.LAST SEASON: Papelbon, 35,went 4-3 with a 2.13 ERA, a 1.03 WHIP and 24 saves in 63 1/3 https://www.twinsedge.com/minnesota-twins/kirby-puckett-jersey innings with the Phillies and Nationals and is due $11 million in 2016.Storen, 28,was demoted from the closer role once the Nats brought inPapelbon despite 29 saves and a3.44 ERA. He isarbitration-eligible for a final time this winter after making $5.7 million this past season.Chapman is alsoarbitration-eligible after making$8.05 million in 2015 andowning a 1.63 ERA, a 1.15 Justin Morneau Jersey WHIP, a 116:33 K:BB ratio and 33 saves with the Reds.WEIGEL: Chapman has matured into complete pitcher for RedsThe top reliever on the free agent market, O'Dayhas recorded a1.92 ERAover four seasons with the Orioles in a setup role. Hisskills and sidearm approach helpedmake O'Day a 2015 All-Star thanks to acareer-best 11.3 K/9 rate and a 5.86 K:BB ratio.OUR TAKE: The Nats will find a suitor for Storen, but dealing Papelbon's aging arm and $11 million price tag may put them in a stranglehold. He insisted lastsummer thatthe only way he'd come to Washington would be as the Nats' closer, and he likely will remain in the role if he stays. If they can deal him, they'llhave a chance to landChapman and his 100-plus mph fastball to close out games. With Chapman due to be a free agent next winterand the Reds in rebuilding mode, Cincinnatiwill be waiting for the best offer for the four-time All-Star.Regardle s of what happens with Papelbon, the Nats will likely be looking for setup help. Enter O'Day, wholeads free-agent relievers with a 1.8 WAR and will be looking for a three-year deal upwards of $20 million, an AAVslightly more than Storen's.Another option for the Nats is a reunion tour with free-agent relieverTyler Clippard, whomGM Mike Rizzo wanted to reacquireat the deadline last summer.Other free-agent relievers who fit the Nats'bullpen needs include left-handers Tony Sipp (1.99 ERA, 1.03 WHIP, 62:15 K:BB ratio, 13 holds in 2015) andAntonio Bastardo (2.98 ERA, 1.13 WHIP, 64:26 K:BB ratio, one save, nine holds in 2015) and right-hander Joakim Soria (2.53 ERA, 1.09 WHIP, 64:19 K:BB ratio, 24 saves, 11 holds in 2015) Joe Mauer Jersey .