FA Cup games are the ones for me where crowds have rocketed over recent years. We've sold out every home FA Cup tie that has played at a weekend in the past 5 or 6 years. We get 54,000 sell outs for 3rd round matches these days but 10 or 15 years ago there would've been 20,000-25,000 less than that in the ground even if it was a 3pm kick-off on a Saturday.
That because thouse tickets are between £5 and £20. Loads of new, young, families can go. And there's the clue. But the club won't do that for the CL.