According to Spanish publication Sport, a fee of around €30m (£26.7m) has been agreed between the German and Spanish giants and the Chilean has also reached a verbal agreement with Barca.
Vidal, 31, has been linked with a move to Manchester United and Chelsea in recent months but both clubs looks set to miss out on his signature.
The Blaugrana have already completed three transfers this summer – Malcom, Clement Lenglet and Arthur – but Ernesto Valverde is keen to recruit more.
And their fourth signing through the door looks like it could be veteran midfielder Vidal.
Marc-André ter Stegen says it would be a honour to hold one of the vice-captaincy roles at Barcelona this season.
The No1 goalkeeper, who is preparing for his fifth season as a Barca player, has been tipped to be one of the vice-captains considering that Lionel Messi looks set to be named the new captain following the exit of Andres’ Iniesta.
“It’s something that the squad will decide, but it’s an honour that my name is being talked about for the captaincy position,” the German goalkeeper was quoted as saying by AS.
“It would be an honour to be one of the captains, of course it would. But for me it’s not the most important thing. We need more than four captains.”
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22:45 – Marc-André ter Stegen interested in vice-captaincy role
The goalkeeper admits it would be an honour if he is one of the vice-captains at Barcelona this summer. Read more on what he said here.
20:30 – Leon Goretzka happy to reject Barca after moving to Bayern Munich
The midfielder says it’s an honour to have been linked with Barcelona but is convinced he made the right decision to join Bayern Munich. Read more on what he said here.
18:10 – Vidal could be the one for Barca
15:45 – Alcacer is heading to The Hornets’ nest
Barcelona striker Paco Alcacer could be set for a two-year loan switch to the Premier League with Watford.
14:05 – Vidal should soon be sold
Barcelona have reportedly moved close to agreeing a deal, worth a potential €10 million (Dh42.7m), to sell unwanted utility man Aleix Vidal back to Sevilla.
12:50 – Semedo does not dwell on Neymar scrap