However, despite talk of a big-money switch, Willian has said that he is only focused on helping Brazil try to win a sixth Jules Rimet trophy.
At a press conference, the 29-year-old told reporters: "People speculate a lot and we see a lot of things on the Internet but this is not the time to talk about this.
"I've not received any information about whether [Barca's interest] is true. I'm trying to focus on the national team at the moment."
Willian currently has two years remaining on his contract at Stamford Bridge.