Wales take on Denmark for a place in the quarter-finals of Euro 2020.
Rob Page's men lock horns with the Danes in Amsterdam on Saturday after both sides finished second in their respective groups.
Welsh fans have been left angered after Dutch police stated they would not be permitted to attend the fixture at the Johan Cruyff Arena on Saturday.
READ MORE: How Wales are being tucked up at these Euros
It comes as Denmark fans were informed they could travel to the capital city venue to cheer on their team.
A maximum of 16,000 supporters are expected to be in attendance at the 55,500-seater venue for the crunch last 16 fixture. And barring a late U-turn, none of those will be of a Welsh persuasion given that the Netherlands are not allowing visitors from the UK.
Looking further ahead, the situation also looks bleak as far as attending a potential quarter-final is concerned.
The winner of the clash between Wales and Denmark will play in the last eight fixture at Azerbaijan's Olympic Stadium in Baku on Saturday, July 3.
That game would be against either the Netherlands or one of the third-placed teams in the group stages.
In May, the Football Association of Wales urged fans not to travel to Baku and Rome for the group stage matches against Switzerland, Turkey and Italy.
Azerbaijan is on the UK's amber list, meaning only essential travel to the country is recommended.
However, a hardy band of supporters made the long trip to Baku to watch Wales' first two matches.
The Azerbaijani capital is one of the most difficult and expensive host cities to reach from the UK, although it would be possible for a small number of supporters to attend a potential last eight tie.
The Baku Olympic Stadium has operated at a 50% capacity (which amounts to around 35,000 fans per game) so far in the Euros.
While not wanting to jump the gun on potential progress in the competition, beyond the quarter-finals is where the Welsh fans could finally watch games in person in significant numbers.
Both semi-finals and the final will be held at Wembley. The last four ties take place on Tuesday, July 6 and Wednesday, July 7 while the final gets underway at 8pm on Sunday, July 11.
Not only would travel and accommodation arrangements be far easier should Wales emulate Chris Coleman's class of 2016 by reaching the semi-finals, but the possibility of supporters attending a game would be significantly increased.
On Tuesday, it was confirmed that Wembley would host more than 60,000 fans for the two semi-finals and the final.
Wales and the Red Wall have well and truly had a raw deal so far in this summer's tournament.
But, if things go to plan, they could have a memorable ending in London when the squad are reunited with their beloved supporters.
If England progress through the knockout stages, and Wales repeat their Euro 2016 semi-final exploits, the two could clash in a huge Battle of Britain last four showdown at the home of football.
Wales' last 16 encounter with Denmark will take place at Amsterdam's Johan Cruyff Arena on Saturday. Kick-off is at 5pm.
Wales' potential Euro 2020 fixture dates
Last 16 - Saturday, June 26. Johan Cruyff Arena, Amsterdam. (5pm kick-off)
Quarter-final - Saturday, July 3. Olympic Stadium, Baku. (5pm kick-off)
Semi-final - Wednesday, July 7. Wembley, London. (8pm kick-off)
Final - Sunday, July 11. Wembley, London. (8pm kick-off)
