Why Chelsea wanted Liam Rosenior so badly

A week after announcing the departure of Enzo Maresca, Chelsea have replaced him with Strasbourg's Liam Rosenior. Although still relatively early in his managerial career, he's already carved out a reputation for being a great tactical manager, and one of the rising stars in the game. Adam Clery looks at what he can bring to this Chelsea team, and how they will set up under him.