Chelsea has confirmed the appointment of Andre Villas-Boas as their new coach.
Chelsea said: "He has signed a three-year contract and will start work immediately.
"Andre was the outstanding candidate for the job. He is one of the most talented young managers in football today and has already achieved much in a relatively short space of time.
"His ambition, drive and determination matches that of Chelsea and we are confident Andre's leadership of the team will result in greater successes in major domestic and European competitions.
"Andre will bring his coaching experience back to a club he is already very familiar with, having previously worked here for three years. He has always been highly regarded at Chelsea and everyone here looks forward to welcoming him back and working with him."