Arsenal midfielder Tomas Rosicky has suffered an injury setback.

The Mirror says Rosicky has been ruled out of Arsenal's London derby at West Ham after suffering another injury setback.

Czech midfielder Rosicky missed the midweek Champions League trip to AZ Alkmaar with a knee injury but was confident of being fit for Sunday.

But the injury-prone Rosicky, just back from more than a year out, will miss out after the knee problem flared up again.

Arsenal boss Arsene Wenger said: "Before training we thought Rosicky would be 50/50, but he will not be available for Sunday."