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Nicolò Barella's first professional football club was Cagliari. Barella was born in Cagliari, Sardinia, Italy, and started his youth career with the club in 2008. He made his first-team debut for Cagliari in 2013, and went on to make 88 appearances for the club, scoring 11 goals. In 2017, Barella joined Inter Milan, and has since made over 100 appearances for the club, scoring 14 goals.