Manchester United boss Sir Alex Ferguson admits Nemanja Vidic is still some weeks away from a return.

Ferguson also has left Rio Ferdinand at home for tonight's Champions League tie at Benfica.

"It's just a precaution really," he said of Ferdinand.

On Vidic's continued absence: "The assessment of his [calf] injury at the time was pretty accurate. He hasn't started training yet. I would think it will be another two weeks before he does."

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