“It’s not a big injury but he can’t play for the next four or five weeks”
And the club will be without one of their star performers from last season in Lanzini.
Ahead of tomorrow night’s Europa League clash against NK Domzale at the Olympic Stadium, Bilic said: “Unfortunately for us, Manuel Lanzini’s injury is a blow.
“It’s not a big injury but he can’t play for the next four or five weeks.”
West Ham will also be without Aaron Cresswell for the start of the new season and Bilic is hoping to land a new left-back as cover for him.