3. Gary Cahill
In January 2012, Chelsea FC turned their attention to 26 year old Gary Cahill from Bolton Wanderers as they looked to bolster their aging defence. Cahill made the move from the Reebok stadium to Stamford Bridge for a reported fee of around £7 million. Initially, a bit-part player who didn’t particularly have the confidence of the managers at the helm of the London club; Cahill has grown into a mainstay for club and country over the past couple of years. A solid centre-half who is fearless in a tackle, together with John Terry, Cahill has formed one of the most formidable centre-half partnerships in the league. An internationally recognized defender who gives his all every time he pulls on the shirt for a meagre £7 million is one of the shrewdest signings Chelsea have ever made.