The Bianconeri, who beat the likes of Borussia Dortmund and Real Madrid en route to the final, are looking to win Europe's top club competition for the first time in 19 years, while the Catalans have won it three times in the last nine seasons.
Vidal is looking forward to the "most important" match of his career and says his side have overcome the odds before this year and can do so again in Berlin on Saturday.
"You feel so many emotions when you see the game getting closer," he told the club's offical website.
"I think it’s a dream to be here, this close to the most important game of my life.
"Playing in the final of the Champions League is the ultimate.
"Everyone has always said they were favourites against us. And we have shown a different thing on the pitch, so hopefully we can win on Saturday and the favourites can lose."