Tobin Heath has returned to the United States after suffering an injury setback, Manchester United head coach Casey Stoney has confirmed.
Heath has been sidelined since January with an ankle injury, but Stoney said the U.S. national team winger has now suffered a knee complaint.
The setback leaves Heath in a race against time to be fit for the Olympics, which start in July.
Editors' Picks
What was said?
"Unfortunately Tobin picked up a knee injury, so she's had a bit of a setback," Stoney told Man Utd's Twitter account.
"She's actually gone back to the U.