The Chile international – who starred for his side at the World Cup – is thought to be Louis van Gaal’s top target for the coming months.
After snapping up the creative Ander Herrera, the Dutchman wants a physical presence with plenty of energy alongside, with Vidal the ideal candidate.
The 27-year-old is widely seen as one of Europe’s best box-to-box players, and has been a key member of Juve’s recent successes.
United are desperate to get their man, but the Old Lady are far from willing to sell.
They would only consider a massive £45m in cash and Nani – a target for the Turin giants for some time – to part with Vidal.
This may deter the Red Devils, who are also looking at William Carvalho of Sporting Lisbon.
The Portuguese youngster would cost around £37m, but would command lower wages and is seen as more of a long-term option.