Rafa Benitez is set to become the new Everton boss.And if you ask "why ?!" rest assured, you are not the only one.The Spaniard is a legend of Stanley Park in Liverpool. Before Jurgen Klopp, he is still by far the best manager in the 2000s and won the Champions League, the FA Cup and eight Merseyside derbies at Everton's expense.So when the news came that he has been named their new boss and will only be the second coach ever to cross the Merseyside gap, it's easy to see why those with a blue persuasion were less than…