Manchester City FC have taken their summer spending past the €100m mark with the signing of striker Mario Balotelli from FC Internazionale Milano for an undisclosed fee.

Balotelli, who turned 20 on Thursday, has penned a five-year contract with the UEFA Europa League contenders, reuniting him with the coach who gave him his Inter debut in 2007, Roberto Mancini. "I think that Mario is one of the best players of his age in Europe, and I'm very happy to be working with him again," said Mancini.

The transfer to the City of Manchester Stadium completes a memorable week for the player after he made his Italy debut in a 1-0 defeat by Ivory Coast on Tuesday. Balotelli is the Premier League club's fifth major acquisition of the summer following the arrivals of Aleksandar Kolarov, David Silva, Yaya Touré and Jérôme Boateng.

Having started his career with AC Lumezzane, Balotelli joined the Nerazzurri in summer 2006. In his first two seasons at San Siro, Balotelli won the Scudetto twice and the Italian Super Cup and was a regular in the team which completed a historic treble of Serie A, Coppa Italia and UEFA Champions League under José Mourinho last term. In total, Balotelli scored 28 goals in 86 matches for Inter. Manchester City visit FC Timişoara in the first leg of their UEFA Europa League play-off tie on Thursday.