I'm a big football fan but have to admit it is very hard to reproduce such a situation in a sit-com. What little there has been has been very cliched, unrealistic and not very funny. Apart from the odd exception, it doesn't convert easily to film or to novels either.
The thing is, football itself provides its own humour whether it is through magazines, phone-ins, fanzines, websites and tv shows (admittedly there is an awful lot of crap as well). Its an internal thing - it just does not transfer easily to the masses who don't follow the game.
By the way, I thought Jossy's Giants was rubbish - even as a football mad kid!