Arsenal manager Mikel Arteta says any decision to play the Europa League last 32 tie against Benfica as a one-off match due to coronavirus travel restrictions is out of his hands.
Portugal and countries in South America are on the UK's 'red list'. Arrivals from these countries will be forced to quarantine in hotels for 10 days, and the PA news agency understands there will be no exemptions for elite athletes.
The Gunners are due to face Benfica on February 18 in the first leg in Lisbon, with the return in London a week later.
Unless FIFA changes its rules, Premier League clubs would also, as things stand, not be obliged to release Portuguese or South American players for World Cup qualifiers.
In October last year world governing body FIFA "temporarily adapted" rules on release of players to cover the 2022 World Cup qualification programme for the remainder of 2020.
The rules on player release applied as normal, FIFA stated, unless "there is a mandatory period of quarantine or self-isolation of at least five days upon arrival in the location of the club which has an obligation to release the player to an association team".
