Willian has completed his free transfer to Arsenal, joining on a three-year-deal.
The Brazilian leaves Chelsea, despite them being in the Champions League, after seven years at Stamford Bridge. Willian was offered a new contract but decided against staying.
Willian described his time at Chelsea as “seven wonderful years”, before adding: “There were so many happy times, some sad, there were trophies and it was always very intense.
The 32-year-old passed his medical without issue and will now enjoy some time off before linking up with his new team-mates ahead of next season.