The 27-year-old goalkeeper flew into London from Italy on Sunday
night and headed straight for the first phase of medical tests at the
Gunners’ London Colney training ground.
Goal understands the Italy international has now passed the medical despite a history of knee trouble.
Viviano will join on a season-long loan, which gives Arsenal the option to buy him at the end of the campaign.
Viviano spent last season on loan at Fiorentina but they have not
taken up an option to buy him and he is expected to be registered with
Arsenal before Monday night’s 11pm transfer deadline.
Arsene Wenger turned his attention to Viviano after continually revising his list of goalkeeping targets during the summer.