Midfielder Amandine Henry and forward Nadia Nadim will not be returning to the Portland Thorns next season, a source confirmed to the Oregonian/OregonLive Sunday.

The Thorns have been aware of the departures for some time and already have high-caliber players lined up to replace both Henry and Nadim, the source said.

Both Henry and Nadim are committed to the Thorns through the conclusion of the 2017 NWSL playoffs.

Henry, a mainstay on the French Women's National Team, will be leaving Portland to join Olympique Lyon, while Nadim will be joining Manchester City.

The moves were made for financial reasons, according to the source. The NWSL has a strict salary cap of $315,000 for each team and the Thorns could not compete with the offers made by Lyon and Manchester City.

Henry joined the Thorns midway through the 2016 season after nine seasons with French powerhouse Olympique Lyon. Henry, who is considered one of the top women's soccer players in the world, signed with Portland following a tremendous 2015 campaign where she was named to the 2015 FIFPro Best XI women's players in the world, received the Silver Ball as the second best player at the 2015 Women's World Cup, earned the honor as the second-best player in Europe in 2015 and was on the shortlist for the 2015 World FIFA Player of the Year award.

During her time in Portland, the 27-year-old Henry has become a mainstay in central midfield for the Thorns, compiling 27 starts (29 appearances) and recording three goals and an assist over one and a half seasons.

The Thorns acquired Nadim from Sky Blue FC ahead of the 2016 season and the Denmark Women's National Team mainstay made a huge splash in her first season in Portland. Nadim led the Thorns with nine goals in 21 starts in 2016. She has five goals in 12 starts this season.

Correction: An earlier version of this article misidentified the club that Henry is joining. She will join Lyon, not PSG.

-- Jamie Goldberg | jgoldberg@oregonian.com

503-853-3761 | @jamiebgoldberg