“It’s the first time in his professional career that he’s been confronted with a difficult period. He’s not machine, as we know.”
Meanwhile, a number of other crucial players for Chelsea could be leaving the club, along with some of the dead wood.
Express Sport undertsands Juventus are keen to sign Oscar and Diego Costa has been linked with a return to Atletico Madrid.
And Radamel Falcao, Loic Remy, Pedro, Nemanja Matic and Alexandre Pato could also leave Stamford Bridge.