Norwich City can confirm that centre-back Christoph Zimmermann will miss the next 4-6 weeks of action after undergoing knee surgery.

Zimmermann sustained a medial meniscus tear in his left knee during the off-season and had surgery in London last week.

He is now back at the Colney Training Centre and working hard to get back to full fitness as soon as possible.

The 26-year-old put pen-to-paper on a new four-year deal on Tuesday, with a further year option.