The centre-back completed a £25m switch to the Toffees from Burnley on Monday night.
And the 24-year old was quick to point out that his new manager's experience and knowledge were pivotal to him moving to Merseyside.
"First and foremost, the manager was a big factor in me coming to the club," Keane told the club's website.
"He played in my position when he was a world-class player for a great Barcelona side and a great Dutch side and the style of football he likes to play will suit me, I believe.
"I watched a lot of Everton last season and I believe I really suit how the team likes to play. I feel like this is a great place to come and continue my development as a player.
"He's convinced me that he can still improve me in certain areas of my game.
"I'm only 24 which, for a centre-half in the Premier League, is relatively young. I've still got a long way to go and I know this and hopefully under his guidance I'll keep improving.
"You always want to play for a manager who believes in you. I wanted to come somewhere I was wanted by the staff, players and fans as well. I feel like Everton is the perfect match."