The Dutchman picked up the injury in the 3-3 draw with Kaiserslautern last Saturday.
Stuttgart reports on their official website that the former Chelsea defender has sustained a calf muscle sinew tear.
The Dutchman picked up the injury in the 3-3 draw with Kaiserslautern last Saturday.
Stuttgart reports on their official website that the former Chelsea defender has sustained a calf muscle sinew tear.
