If you haven't heard of it, there's an online management sim in beta test.
It's called
SoccerSim.
There are five or six game 'universes' running parallel with each other, and the the number of game turns per real time day (called 'ticks') vary with each game. Each game has about 900 players in it!
I'm not sure if they're still signing up beta testers, but it's worth a look anyway.
I'm in game 'beta3c' and am managing Millwall in the English 2nd Division. You can manage any team in Europe and the Middle East (providing someone else isn't already managing it).