The midfielder became the second arrival of Frank Lampard's tenure in charge of the Blues, completing a permanent switch to Goodison park from Tottenham Hotspur late on transfer deadline day.
Alli told evertontv: “It is a perfect match and I can't wait to get going.
“Speaking to the owners and manager and some of the players… we are heading in the same direction, we want to look forward, and that is how I am as a person.
“I don't ever think anything is enough. You want to achieve as much as you can, score as many goals and get as many wins as you can. To keep building and heading in the right direction.
“It's what the club wants and what I want, too.
“I know how much it means to the fans, here, and the team and I want to help as much as I can.
“The owner and chairman were the first people I spoke to. I felt very comfortable and confident and wanted. As a player, the main thing is to feel wanted.
“Especially as an attacking and creative player, you want to know you can express yourself and bring excitement to the game, with and without the ball.
“That's what I want to do and the kind of player I am. I am very ambitious and passionate, so feeling that from the owner and manager drives you on to want to do well for not only them but the whole club."
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