Vidic has recovered from the sciatica problem that prevented him flying out on United's epic tour of Australia and the Far East, where so much of their fitness work was undertaken.
"I did train with the reserves in England, so I had a pre-season," he said. "It was just that I didn't have as many matches as the other players.
"But I have played two full 90 minutes now.
"I am feeling fit and as the season goes along and we have more games I will get better and better. But that is the same for every player.
"At the moment I feel really good and I am looking forward to the new season."
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