The rivalry between Chelsea and Arsenal isn't quite the same without Jose Mourinho taking various digs at Arsene Wenger before and after each engrossing encounter.
Nevertheless, even without Mourinho in the Chelsea dugout, the two sets of supporters still have a strong dislike for each other.
But that hasn't stopped Willian risk feeling the wrath of his own fans by naming an Arsenal legend as his idol.
Thierry Henry scored 175 goals in the Premier League for the Gunners - the fifth-highest tally in the history of the English top-flight.
Alan Shearer still leads the way with 260 but Henry is the highest placed non-Englishman on the list.
The French striker turned pundit was often also a thorn in Chelsea's defence, scoring 10 goals across all competitions against the Blues during his career.
And Willian has revealed that he has studied some of Henry's iconic strikes to influence his own game.
"For me, in the Premier League, he was one of the best players," he said in a video published on the official Premier League website.
"The way he played, he scored so many goals – beautiful goals."
Willian has had to deal with the disappointment of being dropped from Brazil's starting XI for the current international break.
Liverpool's Philippe Coutinho was given the nod ahead of the 28-year-old for the 5-0 victory over Bolivia last week, following a series of disappointing performances for Brazil by the Chelsea star.
Despite Chelsea's stuttering start to the season - which included a 3-0 defeat to Arsenal - Willian has been a firm fixture in Antonio Conte's team.
Even during the darkest periods of last term, the former Shakhtar Donetsk winger was one of the few to still come out with any sort of credit and such is his status among Chelsea supporters, we think they'll let him off for picking a rivals' star as his idol on this occasion.