Cesar Azpilicueta signed for Chelsea almost a decade ago.
The Blues had come off winning the Champions League and in late August stumped up £7 million to Marseille to sign the Spaniard, on the same day they purchased Victor Moses from Wigan.
The likes of Charly Musonda, Andreas Christensen, Eden Hazard and Oscar also signed that summer with Robert Di Matteo in charge of the club.