his first goal of the season, coming off the bench to complete a 4–1 come-from-behind win at home to Cardiff City on 15 September. Prior to this, he had won a penalty that Eden Hazard converted for his hat trick. On 27 January, Willian, on his 550th club appearance, netted a brace in a 3–0 home win against Sheffield Wednesday in the fourth round of the FA Cup. The first goal was his 50th for Chelsea. 2019–20 season In August 2019, Willian became Chelsea's new number 10 for 2019–20 season, taking over from Eden Hazard. He scored his first goal of the season in a 2–0 home league win over Brighton & Hove Albion on 28 September. In the next fixture, Willian scored the winning goal on his 300th Chelsea appearance, a 2–1 away win against Lille in the Champions League. He scored a double to beat Tottenham 2–0 away from home on 22 December. Willian scored twice in a 2–3 league defeat to West Ham United on 1 July 2020. In doing so, Willian became the first player to score a Premier League goal in every calendar month. He scored in his third consecutive game from the penalty spot in Chelsea's next league match, a 3–0 win over Watford; the goal meant Willian had scored nine league goals which was his highest league total in a Chelsea shirt. On 9 August, Willian released an open letter about his departure from the club on Twitter. Arsenal On 14 August 2020, Willian signed for Premier League club Arsenal on a three-year contract. On 12 September, Willian made his debut for the club against Fulham, recording two assists, as Arsenal won 3–0. On 28 February 2021, Willian registered an assist in a 3–1 win over Leicester City in the Premier League, which was his first goal/assist contribution in the league for Arsenal since November 2020. On 9 May, Willian scored his only goal for Arsenal in a 3–1 home league win over West Bromwich Albion, sealing the Baggies' relegation to the EFL Championship. Just after a year at the club, which Willian described as "the worst time that he had lived as a professional", on 30 August 2021, Arsenal announced he had left the club by mutual consent and confirmed that Willian was set to re-join his boyhood club, Corinthians. Return to Corinthians On 30 August 2021, Corinthians announced the return of