Moutinho suffered the injury in Monaco’s goalless draw at home to Lille on Friday.
Moutinho was forced off just after the hour-mark.
Scans over the weekend have shown that the midfielder will be out for between four and six weeks.
REPORTE MÉDICO: @JoaoMoutinho estará de baja entre 4 y 6 semanas. Le deseamos una pronta recuperación! pic.twitter.com/4RiJbqIqIH
— AS MONACO (@AS_Monaco) 16. august 2015
