Arsenal will face Benfica in Rome in the first leg of their Europa League last-32 tie.
The UK government has placed quarantine restrictions of people arriving into the country from Portugal.
The regulations caused UEFA to move Arsenal and Benfica's clash.
Italian capital Rome has been chosen, with the game to go ahead at Stadio Olympico on February 18.
The second leg will also need to re-arranged, with Benfica barred from entering the UK.
Athens is being touted as a potential host city for the clash on February 25.