Portland Thorns FC and U.S. women’s national team midfielder Tobin Heath will be out for another two to three weeks with a back injury, Jamie Goldberg for The Oregonian reported on Tuesday.

According to Thorns FC head coach Mark Parsons, Heath could make her return against the Boston Breakers on May 27, but in the meantime she needs a few weeks to nurse the lingering injury.

Heath’s back injury was first described as minor when she was suffered it during preseason, but after four weeks of league play the two-time Olympic gold medalist has not geared up for Portland. Last month Heath also was taken off the U.S. WNT camp roster due to the injury.

[More from Excelle Sports: Tobin Heath ruled out of Saturday’s game for Portland Thorns FC]

Thorns FC sit in second place in the league standings just behind the North Carolina Courage and will look to improve their 2-1-1 record against FC Kansas City on Saturday May 13.