Claudio Ranieri has been confirmed as the new coach of Internazionale and has vowed to "wake up the team".
The former Valencia, Chelsea and Roma manager has signed a contract to June 2013 to replace Gian Piero Gasperini, who was sacked on Wednesday after three months in charge.
Ranieri told Domenica Sportiva: "Inter are a great team. They have had a bad start to the season and I will have to talk to the team to understand why that was.
"I will have to bring enthusiasm and a change of gear in order to wake up the team. I cannot promise that we will win this or that but I believe this team has a lot to give and we must prove it."
Tuesday's humiliating 3-1 defeat at newly promoted Novara – Inter's fourth defeat in five games – proved to be Gasperini's final act in charge. But Ranieri praised Gasperini's efforts despite his short tenure at the club.
"Gasperini wanted to bring his ideas and make them work at all costs but he didn't manage to do it," the 59-year-old said. "I will try to make this team play as it knows how, with all of its strength.
"Gasperini didn't make a mistake and we have to say well done because he tried everything to make his ideas work."
Ranieri's first game in charge will be at Bologna on Saturday before a trip to Russia to face CSKA Moscow in the Champions League.
A statement from Inter said: "All of Inter has the pleasure of welcoming Claudio Ranieri and his staff. Ranieri will guide today's training session and will be unveiled tomorrow to the press."
Ranieri had been out of a job since leaving Roma in February.