Cahill admits he's pleased to see the Italian as Toffees manager.
He told Sky Sports: "I bumped into Carlo Ancelotti when I was at Finch Farm a few months back, and what a gentleman. He drove past me, he then pulled up, reversed and got out of his car and gave me a big hug. He told me I could come in whenever I wanted. That's what the club is all about.
"He's won the fans over, which is really important because they're a big part of the football club. Everton will certainly improve and I'm looking forward to seeing where he can take the club."