#2: Harry Redknapp

Harry Redknapp particularly made a name at the White Hart Lane in London. It's his genius mind that laid the foundation to the new and exciting Tottenham Hotspur that we see today.
The English coach joined Portsmouth as their manager in 2002 and was an instant hit with the fans after he grabbed the Division One title and gained a promotion to the Premier League in the 2002-03 season. Portsmouth stayed in the top-flight the following year, but Redknapp stepped down after a fall-out with owner Milan Mandaric.
A few weeks later, the Englishman lost all his respect after he signed up with fierce rivals Southampton. Redknapp was subjected to gruesome hatred from the Portsmouth supporters, who bore T-shirts referring to him as 'Scummer'.
Redknapp had a rather failed stint at Southampton. He was asked to keep Southampton in the Premier League but did exactly the opposite. After just one season Redknapp resigned and walked the road to redemption, returning to Portsmouth in 2005 to stay for three years. Portsmouth finished in the first half of the league table for the first time on Redknapp's arrival. Later in 2008, the Pompey emerged victorious in the FA Cup as fans cherished beautiful memories.
Scrutinising closely, one can even say Redknapp remained loyal to Portsmouth in his stint with Southampton. After all, he did condemn the Saints to relegation for the first time in 27 years!