Michael Ballack
The season was their fourth under the ownership of Roman Abramovich and Chelsea spent heavily in the transfer market before the season. Notable transactions include the signing of Andriy Shevchenko from Milan for £30 million and Salomon Kalou from Feyenoord for an undisclosed fee. They also added Michael Ballack from Bayern Munich on free transfer and also exchanged William Gallas and £5 million with Arsenal for Ashley Cole.