Hyndman signed with Fulham in England in 2010. He made 25 appearances with the Cottagers from 2014-16.
He was purchased by Bournemouth in 2016. He went on loan to Rangers in Scotland in 2017, where he made 13 appearances, and then went on loan to Hibernian in Scotland in 2018, making 15 appearances. He has less than five appearances with Bournemouth.
Hyndman has two appearances with the U.S. men’s national team and several with the youth national teams.
Hyndman likely will provide cover for Darlington Nagbe and Julian Gressel in central midfield.
Atlanta United still has two roster spots open, but neither are Senior level spots. The first spot is open because of the loan to Lagos Kunga to Memphis in the USL. The second spot is open because of the loan to Jon Gallagher to Aberdeen.