“saopaulo_worldcup_players_event_tavener” (CC BY 2.0) by  Ben Tavener  In one of the most unexpected and shocking twists of this summer’s transfer window, Chelsea re-signed their former player David Luiz from Paris Saint-Germain for a fee in the region of £30million, according to Sky Sports. Chelsea’s new manager Antonio Conte was looking to bolster his defence this summer but the