The shadow of the Covid-19 pandemic continues to hang over football. Not only is the game still being played without fans in attendance but travel restrictions are creating a logistical minefield as the European competitions resume.
With countries closing their borders to try and prevent the spread of coronavirus and, in particular, new and dangerous Covid strains, a number of fixtures have been moved to neutral countries.
But often restrictions on travellers from one country to another is not reciprocated and also a country may ban visitors from a certain country but not others.
The Puskas Arena in Budapest will host both Liverpool and Manchester City's last-16 games
It's all creating a complicated and ever-changing picture as the clubs affected and UEFA scramble to locate suitable venues for fixtures taking place, in some cases, next week.