Chelsea face Arsenal today at 8pm in Baku, Azerbaijan, with tens of millions expected to tune in around the world.
But many will try and watch the game illegally via streaming sites — sometimes free and sometimes paid for.
Now, police have warned football fans trying to watch the final via any other route that they will be cracking down on such sites even more.
Brit cops said they can and will pull the plug on illegal streams of sporting events at the most crucial moments.
This is an attempt to put fans off from using streaming websites in the first place.
“By illegally streaming the match, you never know when the site is likely to be shut down”
DCI Teresa Russell, City of London Police
The warning comes ahead of both the Europa League final and the Champions League final, which is also taking place this week.
Tottenham and Liverpool face each other this Saturday at 8pm in the final of Europe’s most prestigious club tournament in the Spanish capital Madrid.
The City of London Police said illegal streams are more popular during high-profile sporting events.
A spokeswoman for the force warned people found to be sharing paid-for content can expect to be prosecuted and fined.
Detective Chief Inspector Teresa Russell, head of the Intellectual Property Crime Unit at the force said: “By illegally streaming the match, you never know when the site is likely to be shut down.
“It could be at a crucial point in the match.
“In fact,” she added, “enforcement agencies and companies will aim to do just that in an attempt to dissuade people from using illegal sites in the future.”
UEFA’s decision to hold the Europa League final in far-flung Baku, almost 2,500 miles from London, has been slammed by both fans and club officials.
Last week, charity Amnesty International attacked the choice of venue, after Arsenal’s Henrikh Mkhitaryan was left unable to play.
The Armenian decided not to travel to Azerbaijan for security reasons, as the two countries have been in a decades-long dispute over the Nagorno-Karabakh region.
Amnesty International accused football’s governing authorities of trying to “sportswash” the country’s appalling human rights record, allowing them to legitimise themselves through hosting the showpiece final.
On Tuesday, two Arsenal fans in Mkhitaryan shirts were seen being hassled by police in Baku who warned them against wearing the kits.