The Toffees are currently in sixth place in the Premier League table with 18 points from their opening nine matches.
"The points tally is a very good one, the performances have been very, very good and what I have really been impressed with is the attitude and focus of the players," he told the Liverpool Echo.
"They are a really strong unit who have been successful over the years and for me, it was important to keep that.
"But they have also opened up to doing things in a different way and that has been impressive."
Everton continue their Premier League campaign on Sunday when they welcome Tottenham Hotspur to Goodison Park.