Question to the British and other Europeans football fans out there:

Does the Premier League in England, for example, have a problem with its players competing in competitions where they represent their own countries? For fear of injury, maybe? Are there contract clauses that prevent players from international competitions such as the World Cup or Euro Cup?

Does La Liga frown on the same thing? Do players abide by club management wishes if they try and keep players from representing their countries in international competitions?

How about football leagues in other European (or Asian or South American) countries?