The 46-year-old, who won six trophies as Chelsea boss including the Premier League in 2004/05 and 05/06, conceded that there will be a lot of attention on his return to London, but said he will prepare for the tie as he would any other European fixture.
"They are my former team, my former players, my former fans and my former stadium," he said.
"As a professional, I look at the game no differently than I would [a match] against Manchester United, Arsenal or another team."
Ancelotti has also attempted to deflect attention away from his reunion with Mourinho, denying there is any bad blood between the two after words were exchanged at the end of last season as Inter won Serie A, finishing 10 points clear of Ancelotti's AC Milan.
"If we don't have a good relationship, this game can be a good opportunity to return to a good relationship," he said.
"I'm not ready to play mind games. I never will be ready to play these games. I prefer to play football matches."
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