Denmark played a team of semi-pros/amateurs against Slovakia tonight - https://www.bbc.co.uk/sport/football/45429116
The best players in the squad play in their third tier, while some don't even play eleven-a-side football - rather fustal (modified five-a-side). It appears that they're going to have this squad for their Nations League game against Wales. To be fair to them, they did as well as we did in Slovakia (losing 3-0).
Seems to be some dispute regarding sponsorships that has caused this to happen. Depending on how long this continues, Denmark may be a side that we'd want to draw in the qualifiers.