Man Utd face Ferdinand injury blow

Manchester United boss Sir Alex Ferguson is unsure how long Rio Ferdinand will be out of action with a thigh injury.

The England international suffered a knock in training on Friday, forcing him to miss United's season-opener against Birmingham.

"Ferdinand pulled a muscle in training on Friday afternoon," he told Sky Sports.

"He's out. I don't know how long he's going to be out.

"We're sending him for a scan on Monday."