Manchester United boss Sir Alex Ferguson says crocked Michael Owen can be proud of his contribution in victory over Otelul Galati.
Owen's near-post run paved the way for Antonio Valencia's opening goal on eight minutes. Three minutes later he was off.
Fergie added: "It was a fantastic run to get to Phil Jones' cross. He took all the defenders with him and it left a simple tap-in for Antonio.
"It's a tragedy, I really feel for him. It's difficult to say how long it will be. We'll have to assess him."