The chants by fans of English Champions League winners Chelsea to club owner Roman Abramovich after the Russian oligarch was included on the UK government's sanctions list are a thorn in the side of Prime Minister Boris Johnson.
A spokesman for the head of government on Monday called for the immediate renunciation of any form of recognition for the alleged friend of Russian President Vladimir Putin.
Meanwhile, at Stamford Bridge, efforts to obtain a special permit for ticket sales are in full swing.
"It's time this stopped.
We recognize people's strong feelings for their club, but that doesn't excuse behavior that is totally inappropriate at the moment.
I think people can also show their passion and support for their club without resorting to such things," said Johnson's spokesman on Monday.
Strong restrictions for Chelsea
Downing Street has responded to repeated calls for Abramovich to appear at Chelsea since sanctions were announced against both the oligarch and Chelsea.
Both last Thursday when the team of German team manager Thomas Tuchel played at Norwich City (3-1) and last Sunday when the team of German internationals Kai Havertz, Antonio Rüdiger and Timo Werner won 1-0, the fans chanted loudly chanted Abramovich's name.
The British government's warning to Chelsea's supporters could show more than just a lack of understanding.
The association is largely dependent on the benevolence of the government in order to be able to sell it to a new owner and thus ensure its existence.
A corresponding deal can only be made by further relaxing the special license for the continuation of ongoing gaming operations.
According to Johnson's spokesman on Monday, the club has not yet submitted an application for milder restrictions.
However, the association announced almost at the same time that it would try to get permission to sell tickets in daily conferences.
Chelsea are currently banned from ticketing to prevent new earnings for Abramovich.
The Premier League and the national association FA are also in contact with government agencies to ensure fair competition.
The sanctions against Abramovich already mean considerable difficulties for the blues.
Chelsea are currently not allowed to sign players or extend contracts, and the sale of merchandise is also prohibited.
Costs for travel to away games are subject to a very low limit.