Willian will reportedly put pen to paper on a £220,000-a-week contract at Arsenal over the weekend.
The 32-year-old enjoyed an impressive 2019-20 campaign for Chelsea, scoring 11 times and contributing nine assists in 47 appearances, but he was unable to agree a new deal with Frank Lampard's side.
Arsenal have allegedly won the race to sign the Brazil international on a three-year contract and according to the Daily Mail, the attacker will earn £220,000 a week in wages.
The report also claims that there will be the option for a fourth year, suggesting that the South American could finish his career at the Emirates Stadium.
Willian, who had also been linked with Tottenham Hotspur when it became clear that he would be leaving Chelsea, scored nine Premier League goals during the 2019-20 season.
The attacker has played close to 350 matches for the Blues since arriving from Russian football.