Liverpool - Dirk Kuyt will be out of action for four weeks because of the left shoulder injury he sustained training with the Netherlands.
The midfielder is likely to miss six matches, including meetings with Manchester United and former club FC Utrecht.
Liverpool doctor Peter Brukner says Kuyt damaged the joint "between the collarbone and the shoulder."
Netherlands coach Bert van Marwijk said Kuyt fell awkwardly while attempting to reach a cross in training at ADO The Hague's stadium.
Kuyt scored in the Netherlands' opening European Championship qualifier at San Marino on Saturday but will miss Tuesday's game against Finland at Feyenoord's De Kuip stadium.
He could be back for the October 8 qualifier at Moldova.