Ashley Cole's decision to move to Chelsea from London rivals Arsenal in 2006 was one of the most controversial transfers of the Premier League era and saw William Gallas go the other way, along with a fee of £5 million paid to the Gunners. The rushed deal on the final day of the summer transfer window marked the final decline in the relationship between Cole and the club he began his career at and the publication of his autobiography a few months later ensured that his legacy was forever tarnished.
