Ancelotti has said in the past that he is a big fan of English music, and he is hoping the match at Stamford Bridge early next year will allow him to meet former Watford chairman Sir Elton John.
"I do not know Watford very well at the moment but I will have the opportunity to learn about them," he said.
"The owner of Watford many years ago was Elton John. Elton John is my favourite singer. The match will be an opportunity to meet Elton John."