#1 Joachim Loew
The Germany boss is on this list for reasons entirely different to the previous four. While the others have mainly accused of stirring controversy in one way or another, Loew is on this list for a rather gross reason -- his personal hygiene on the touchline!
The man has won the World Cup with Germany and probably knows that in the modern day game, there are cameras everywhere on the pitch. Yet, he seems oblivious to everything and doesn't think twice before picking his nose or scratching his groin before shaking hands with opposing managers without caring.
When Loew was asked about his antics, he said, “I saw the pictures as well and obviously sometimes you do things subconsciously. It happened and I am sorry."