The Italian, who won two league titles at Chelsea, has been impressed with Spurs' recent league form, but has warned that the club must not lose their focus if they are to claim the top-four spot that escaped them last term.
"This team has everything to be special but there's still a long way to go," the 38-year-old said.
"Since I've been here the Christmas period is very important. You have many games in a short space and you have to try to get the most out of it.
"For this club it's very important to finish in top four. To be in the top four for this club is very important.
"We experienced what it meant to be part of Champions League campaign last year and we want to get it back again. That's the main target."