Robin van Persie: Man Utd striker ruled out for four-six weeks.
Manchester United striker Robin van Persie will miss between four and six weeks with a sprained knee.
The Dutch international, 30, was taken off on a stretcher after scoring a hat-trick in Wednesday's 3-0 win against Champions League opponents Olympiakos.
Read More: http://www.bbc.com/sport/0/football/26686933
Robin van Persie: Man Utd striker...
