On 16 September, Willian scored directly from a free kick to open the scoring as Chelsea defeated Maccabi Tel Aviv in the club's first game of the Champions League group stage.
He went on to score from free kicks in the team's next three matches; Premier League matches against Newcastle United and Southampton and a 2–1 loss at Porto in the Champions League.
On 4 November, Willian scored his fifth free-kick of the season to give Chelsea a 2–1 win over Dynamo Kyiv, and 20 days later he recorded a sixth in a 4–0 triumph at Maccabi, making him Europe's top free-kick scorer of the season.

On 9 December, Willian scored his fifth Champions League goal of the season in a 2–0 victory over Porto in Chelsea's final group match, ensuring the team qualified for the knockout stage as group winners.
He was subsequently named by UEFA as one of the top XI players of the Champions League group stage.

On 13 May 2016, Willian was named Chelsea's Fans' Player of the Year and Players' Player of the Year for 2015–16.
On 16 September, Willian scored directly from a free kick to open the scoring as Chelsea defeated Maccabi Tel Aviv in the club's first game of the Champions League group stage. He went on to score from free kicks in the team's next three matches; Premier League matches against Newcastle United and Southampton and a 2–1 loss at Porto in the Champions League. On 4 November, Willian scored his fifth free-kick of the season to give Chelsea a 2–1 win over Dynamo Kyiv, and 20 days later he recorded a sixth in a 4–0 triumph at Maccabi, making him Europe's top free-kick scorer of the season.
On 9 December, Willian scored his fifth Champions League goal of the season in a 2–0 victory over Porto in Chelsea's final group match, ensuring the team qualified for the knockout stage as group winners. He was subsequently named by UEFA as one of the top XI players of the Champions League group stage.
On 13 May 2016, Willian was named Chelsea's Fans' Player of the Year and Players' Player of the Year for 2015–16.
Willian (footballer, born 1988)