Wayne Rooney to miss 2-3 weeks with knee injury

Manchester United striker Wayne Rooney will miss up to three weeks with a knee injury. Manager Alex Ferguson says he strained a ligament behind the knee when he tried to hit a volley late in practice Tuesday.

Manchester United striker was injured in practice

Wayne Rooney of Manchester United looks on during the Barclays Premier League match between Swansea City and Manchester United at the Liberty Stadium on Sunday in Swansea, Wales. (Jamie McDonald/Getty Images)

Manchester United striker Wayne Rooney will miss up to three weeks with a knee injury.

Manager Alex Ferguson says he strained a ligament behind the knee when he tried to hit a volley late in practice Tuesday. The England star missed United's 4-3 win over Newcastle on Wednesday.

Ferguson didn't specify which knee was injured.