The Brazilian, who is in good form with the Blues this season, hints that he may go back to his old club one day.
The 31-year-old is set to become a free agent in 2020 as his Chelsea contract winds down.
Speaking about the future with DAZN, Willian said: "If I have to return to Brazil, I'd like to play at Corinthians again.
"It represents a lot, I was born and raised there, my footballing career began there when I was nine, I've spent my entire childhood there.
"I've been a Corinthians fan since I was little, even before I played there, my family also supports the club.
"So when I got there all my relatives were very happy, and then, after I got to the first team, everyone was overjoyed."