Former Chelsea boss Jose Mourinho has replaced Roberto Mancini as Internazionale's manager.
Mourinho has signed a three-year contract with the Italian side, who clinched their third successive Serie A title last month.
The former FC Porto manager has been without a job since leaving Chelsea in September 2007.
The 45-year-old won four consecutive league titles with Porto (2003 and 2004) and Chelsea (2005 and 2006) as well as the UEFA Cup (2003) and Champions League (2004) with the Portuguese side.
Mourinho's spell at Stamford Bridge coincided with the club's most successful spell in their history. He guided the club to six trophies in three years and the Blues were undefeated in all home Premier League matches during his tenure.
Inter president Massimo Moratti had said after sacking Mancini last month that it had been done for the good of the club.
Moratti claimed that comments Mancini made suggesting he would leave the San Siro straight after their Champions League exit at the hands of Liverpool, had unsettled the dressing room.
He told the Corriere della Sera: "This created imbalances within the team that forced everyone, managers and players included, to double and triple their energies.
"It's true that we all rowed in the same direction, but we were forced to row harder.
"It was not a whim. The most simple solution would have been to have continued with the coach with whom we won three consecutive championships.
"Nobody would have criticised me, everything would have been smooth. I intervened because I thought it was necessary, not against the coach, but in the interests of Inter."