The Blues midfielder has admitted that Rafael Benitez's men did not do enough to earn victory during Sunday's 2-0 defeat to Manchester City at the Etihad Stadium
Chelsea playmaker Juan Mata has claimed his side must improve their performances against the Premier League's big clubs following Sunday's defeat to Manchester City.
I believe that chelsea is one of the strongest teams in europe but i don't know why they're playing like that...
Maybe they need to focus more and to stop doing some stupid mistakes