Not a bad idea, but there will be so many of these tickets that it is unlikely that most of these NFTs will have any value at all. Would you want to buy an NFT token ticket that is in row 15, seat 52? Doubtful venture. Stadiums hold tens of thousands of spectators and everyone will have a different ticket. I wonder how users will add rarity to their NFT tokens? Maybe the very first ticket sold for a particular match? Well that might have some value. In any case, if one were to create such a collection, it would be strictly limited.
They need to be a little creative , they can add some artworks to that , photos of a footballer , we have legends no one forgets them and people love them.