The agent of Manchester United captain Nemanja Vidic has rubbished career doubts over the Serb's knee injury.

Vidic is expected to have surgery later this week and could be out for up to a year after rupturing three major ligaments in his right knee.

Silvana Martina insisted: "The first forecasts say it can last for a year, but it is meaningless to talk about the end of his career.

"It's a serious injury but club doctors assure us that the recovery will run smoothly and he will be back on the field. It will take time to get back into the old rhythm, but there is no doubt that Vidic will be his old self again.

"Nemanja is feeling good. He will be back next year stronger and better."