The naturalised Italian midfielder is set to play at the Nou Camp for the first time since he was sent off playing for Inter Milan in the 2010 semi final.
His presence will be useful for Paris St Germain, who are missing Blaise Matuidi.
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The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.
Five English clubs will compete in the last sixteen of the Champions League for the first time ever as Liverpool, Manchester United, Manchester City, Chelsea and Tottenham face some difficult away matches.