You are MASSIVELY underestimating this football club if you think there'd be less than 10,000 in Milan.
If we draw them in beyond the league phase (knockouts, quarters, semi) there will be over 20,000 there. Bookmark this. AZ Alkmaar will have a similar number given the ferry route and flights into Amsterdam.
Any other relatively easy game to get to (St Truiden and Anderlecht (if they qualify) and Leverkusen will have mad numbers.
QF might get limited numbers imo. People are piling onto the group games and using their money and leave on that on the basis that you can’t guarantee what happens later on.
After that I think people will be keeping their powder dry for a potential final (even though I assume we’d get 12k tickets or something).