The Cincinnati Reds and Washington Nationals have not made progress in their Brandon Phillips trade negotiations and it's looking unlikely that a deal will be consummated unless the Reds change their demands, a club source directly involved in the negotiations said Friday.

The teams agreed in principle Thursday to a trade that will send the Reds second baseman to the Nationals for multiple minor league players, pending Phillips waiving his no-trade clause, sources told ESPN.

Phillips has not approved the trade yet and is not expected to until the Reds work out fair compensation for him to waive his 10-and-5 rights, a source said. Because Phillips, a 14-year major league veteran, has 10 or more years in the majors, including at least five with the same team, he has the right to reject any proposed trade.

Brandon Phillips was slated to go to the Nationals before the trade stalled. Andy Lyons/Getty Images

On Thursday night, Phillips hinted that he had accepted that he will go to Washington, tweeting that he was going from the 513 (Cincinnati area code) to the 202 (Washington).

When Phillips signed a $72.5 million, six-year contract with Cincinnati in 2012, it was considered a hometown discount because he had no trade protection, he bought a home in Cincinnati and has been heavily involved in the community.

Phillips, 34, is scheduled to make $13 million in the coming season and $14 million in 2017.