Chelsea, Zola: "I saw more games in 2 months with Sarri than in the last 5 years"

Chelsea legend and current assistant manager Gianfranco Zola spoke to Soccer AM: "I saw more more games in the last 2 months than in the last 5 years. I never stop working. Sarri knows everything, player by player. He knows how to defend and attack the opposition's key players and how to close them down. When the players take the field, they know exactly what to do and this is a great help. Maurizio is obsessed in knowing everything about the opposition."