#6 Diego Costa
Most of the Spanish lads who've prospered in the Premier League have been nice guys. But the exceptions are quite a story of their own. The bully in Diego Costa is perhaps what eggs him on to be the champion goalscorer that he is. His ruthlessness and in-your-face hissy fits have thrown him off to the neutrals but if you had him on your side, you'll go to war with him.
However, if loyalty is not a strong suit and you are happily unaware of your place, there'd be an angry text waiting for you when you get home. Costa found this out this summer when Conte sent him a text message to pack his bags and fly out of West London.
But credit should be given where it's due and I'll let Costa's numbers talk for him. 59 goals in 120 appearances in 3 years. Oh and to top it off, 2 Premier League titles in 3 years. Say what?