The Red Devils' chief has lifted the lid on the 30-year-old's battle to recover from a serious knee injury which he suffered during the side's Champions League defeat by Basel in December.
There were reports circulating that Vidic could be in contention to make a comeback before the end of this current campaign as he hoped to help the side in their quest to retain the Premier League title ahead of Manchester City.
However, speaking in a press conference in the build up to Sunday's trip to Tottenham, Ferguson revealed that he has no plans to rush Vidic back and would prefer to concentrate on having him ready for the start of next season in August.
"I think he's on schedule really," said Ferguson. "It'll be the beginning of the season.
"It won't be any sooner - I can assure you of that. There's no point trying to rush him for the end of the season, it's just not possible.
"So it means we'll have him at the beginning of next season, giving him a full recovery as that will be something like eight months.
"I'm not sure about [going on] the tour. It may be possible. That will be a target, I suppose, but we want him in training when we start [pre-season] training."