Diarra told Football 365: “I was going to leave in the transfer window, but Chelsea would not let me.
“[Mourinho] did not say that I would be the first choice [in the starting line-up], but that today I would have my chance.
“We had a discussion and made our points [to one another]. [Now] the coach has more confidence in me.
“I am starting more matches and we are also winning.”
He added: “I have a contract therefore I am staying. It is necessary that I continue to work like I always have done.”