I don't think there are enough football players with public feeds to make it very useful; I was thinking of doing another version of TwitParade it for sports, now that I have the core tech built and stable it would only take a day to get a new version with different people up and running. I looked into it and very, very few are out there.
There are probably plenty of influential and close connected fans to make a gossip feed work, but it would also be filled in with their day-to-day "I'm off to the shops" type stuff. Would ned a lot of pruning. Maybe linked with some keyword analysis before displaying the tweet? hmmm...
The best way would be to find and join the main forums for all the clubs you want to focus on and go through them everyday. But very manual..