Sources: Nationals speaking with teams to gauge interest in Bryce Harper

The Washington Nationals have spoken to some teams to determine what kind of return they could get if they decide they are willing to trade All-Star outfielder Bryce Harper, a source told ESPN's Tim Kurkjian, confirming multiple reports.

There has been speculation that with the team one game under .500 ahead of Tuesday's 4 p.m. ET non-waiver trade deadline, the Nationals would consider dealing Harper and then look to bring him back as a free agent after the season.

But sources told ESPN's Jerry Crasnick that the chances of Harper being traded are extremely remote.

To make a deal for Harper, the Nationals would have to be overwhelmed and get everything they want -- a front-line starter and more -- a source told Kurkjian.

Harper, 25, is hitting .220 with 25 home runs and 62 RBIs in his free-agent season.

MLB.com reported that the Nationals have spoken to a few teams to gauge what kind of return they could get if they decide by Tuesday that they want to be sellers.

The Nationals, who were off Monday, enter Tuesday 5½ games out of first in the National League East, with the Philadelphia Phillies and Atlanta Braves battling for the top spot.