Lisbon looks the favourite to host the final stages of the 2019-20 Champions League.
The Portuguese capital is understood to be in contention to stage a condensed version of the tournament from the last-eight onwards, with all ties to be played as single legs as Uefa seek a solution for completing the competition amid the travel chaos caused by the coronavirus.
How the four outstanding last-16 matches should be completed remains open to discussion. Manchester City were due to play a second-leg match against Real Madrid on March 17 at the Etihad, leading 2-1 from the first leg in Spain. Chelsea are 3-0 down from the home first leg of their tie against Bayern Munich.
It may be that an agreement is reached for these outstanding matches to also be added to the fixture list for Lisbon, which seems set to take over from Istanbul as the venue for the final.
The Portuguese city boasts two major stadiums in close proximity to each other - the Estadio da Luz and the Estadio Jose Alvalade. It is understood other stadiums in the country, such as the Estadio do Dragao in Porto, could also be used.
Istanbul may be compensated with the right to stage a future Champions League final, if the Uefa executive committee does decide Lisbon is the best option when it meets on Wednesday. The final could take place on Sunday, August 23, with all the games condensed into 10 days.
Uefa are understood to be eyeing a mid-October start for the group stages of the 2020-21 Champions League, traditionally when match day three is.