The 32-year-old has already announced that he will be leaving Chelsea after spending seven years at Stamford Bridge.
Willian has reportedly agreed a three-year contract with Arsenal and is now putting the finishing touches on his move to Mikel Arteta’s side.
According to Esporte Interativo, Willian passed his medical tests with Arsenal on Tuesday after the examinations showed no complications.
Willian had missed Chelsea’s last three matches, including the FA Cup final defeat to Arsenal at Wembley, due to an Achilles injury.
But Arsenal are satisfied with Willian’s condition following his medical and are now poised to complete their first signing of the summer.
It’s claimed that Madrid’s hierarchy have been impressed with Ceballos’ performances under Mikel Arteta and the midfielder will now be given the chance to impress Zinedine Zidane during their pre-season campaign this summer.
Zidane, who allowed Ceballos to leave on loan last year, will still have the final say over the 24-year-old’s future but Arsenal had been confident about keeping the midfielder for another season.
Arsenal were already in the market for a new central midfielder this summer with Atletico Madrid’s Thomas Partey one of their top targets.
But the 27-year-old, who will only be sold if his €50 million (£44.9m) release clause is met, is understood to be demanding a £200,000-a-week salary.
Partey’s potential arrival would inflate Arsenal’s wage bill even further as the club also need to commit in excess of £200,000 a week in order for Pierre-Emerick Aubameyang to sign a new deal.