Keep your friends close, but your enemies even closer. In this modern day age of prima donna footballers, high-intensity matches and a sport where there is billions of currency at stake, sparks are bound to fly behind the scenes. It's a fallacy to believe that every top-flight squad boasts a perfect harmony, when millionaires' livelihoods depend on seeing off their competition. With squad places becoming stretched, tensions can certainly rise - it's just up to the club's PR to make sure that it never exposes itself to he public eye. After all, the house must be seen to be kept in order. There is only so much a PR company can do, however. We've seen reports of training ground bust-ups, on-pitch fisticuffs and even an arrest, but this list will stray from the isolated incidents. For example, the infamous scrap between Blackburn duo Graeme Le Saux and David Batty has since been explained as 'heat of the moment', and that the pair bear no animosity towards to each other. The forthcoming list, however, is filled with multimillionaires who have spent the last number of years actively despising each other, revealing their 'hidden' contempt for their former team-mates in the press. For a number of them, it wasn't quite so well masked. Take a look at ten team-mates who very publicly fell out and came to blows.