Ancelotti recalls his time as Chelsea manager in his latest autobiography, “The Dream - Winning the Champions League”.
He writes: “I knew my record would get me only so far
“Abramovich made clear he wanted me to win the Champions League with Chelsea and for Chelsea to carve out its identity on the pitch.
“But now I was working for a Russian oligarch who I suddenly understood expected everything to go well all the time.
"And if it didn't, he wanted to know why. It was my job to supply the answers.”
Ancelotti admits he knew was in for something different after defeat to Wigan Athletic just weeks into his tenure.
"This was when the first hint of a shadow fell across my time at the club.
“Abramovich was at the training ground the morning after demanding answers. What had gone wrong?
“I never had this level of surveillance from (Silvio) Berlusconi. He was a demanding owner and sometimes bought players I didn't need and expected me to fit them into the side or argue about tactics.
“But for a lot of the time he was Prime Minister of Italy so there was no micromanagement. He had more important things to think about.”
Ancelotti was sacked in 2011, with Chelsea winning the Champions League the following year with Roberto de Matteo.
“Perhaps Abramovich was right to let me go.
“The following season Chelsea finally gave him the Champions League - although he did fire my successor six months after he got his hands on the trophy.
“As for me, I remember every day that I was at Chelsea as a good day.”