Willian has signed a new four-year contract with Chelsea tying him to the club until 2020.
Since joining Chelsea for around £32 million from Anzhi Makhachkala in 2013, the Brazil international has won the Premier League and the League Cup and made 140 appearances, scoring 19 goals.
"I'm very happy to sign a new contract with Chelsea. It's a dream to continue with this club and over the next four years I will try to help the team win more trophies," he told the club's official website.
Four more years for Chelsea's Player of the Year - @willianborges88! #CFC https://t.co/S7xD5tAZkk pic.twitter.com/LBgnRSXNFU
- Chelsea FC (@ChelseaFC) July 12, 2016
There had been speculation over a £50 million move to Manchester United for a reunion with former manager Jose Mourinho.
Willian, though, is determined to continue his impressive displays at Chelsea under new coach Antonio Conte.
"It's been an amazing time for me since I joined the club three years ago, I have won titles and last season I was named Chelsea Player of the Year," he added.
"I hope to be able to stay at that level during the coming seasons and achieve more success."