Sentence:  Soccer is class warfare, a battle between the haves and the have-nots, and those with more money and resources always win. In soccer, The Empire is undefeated. And José Mourinho, the world's greatest <WSD>sellsword</WSD>, the man who has discovered nothing in soccer but how to win, is its face. 
Meaning of the word marked with <WSD> tags:  Someone who only works for money, in the manner of a mercenary.