By SABC Sport
30th August 2024
Vieira joined the Gunners from Porto ahead of the 2022-23 season but made just five starts in the Premier League.
After not being named in either matchday squad for Mikel Arteta's side so far this season, he has rejoined his former club.
The 24-year-old made 49 appearances in all competitions for Arsenal, scoring three goals.
Vieira's departure may not be the only one from the club before Friday's transfer deadline day.
According to reports, a deal has been agreed for goalkeeper Aaron Ramsdale to join newly promoted Southampton on a permanent transfer, while forward Eddie Nketiah has been strongly linked with Crystal Palace.