Borussia Dortmund supporters will be prevented from unfurling a mosaic of the Champions League trophy at Wembley before Saturday's final against Bayern Munich due to health and safety fears.
Dortmund's fans are renowned for their imaginative choreography but Uefa and Wembley rules mean a banner cannot be passed between the seats in level one of the stadium and the corporate section in level two, where members of the "Uefa family" will sit.
Wembley officials said they have tried to accommodate the requests of both sets of supporters for the showpiece game, the second time the Champions League final has been held at the ground in three years, but could not guarantee that spectators in the corporate seats would take part in any partisan activity.
So it was deemed that Dortmund's choreography would breach health and safety conditions, while the gradient of the seats in level five of the stadium is too steep for a giant flag to be unfurled.
Daniel Lörcher, a Dortmund supporter-liaison officer, said: "It is very sad for our supporters, there are a lot of regulations and it isn't possible to do a good choreography. We won't do a bad one so it's cancelled. In the middle of the standing area there is the VIP area for non-supporters, if you can't do the choreography here you can't do a whole build. They were planning flags, papers and a whole picture of the trophy.
"They didn't finish their plans, they bought material and flags, but they can use it next season for a home match. It's really sad, it's the biggest game for them and they can't do a choreography. There are problems in London that aren't so big here."
Dortmund supporters will still carry flags and wear yellow shirts to bring a "yellow wall" from Germany to London.
Bayern Munich, meanwhile, will press ahead with their plans for an organised display despite the red tape at Wembley, although their fans admitted there were a number of "hurdles" to overcome and that "the conditions for a successful choreography are catastrophic".