The 26-year-old is expected to move to Camp Nou after he has represented Croatia at the World Cup, with his performances during Sevilla's Europa League victory last season having caught the eye of several of Europe's biggest clubs.
And Rakitic is thrilled to be on the verge of a move to the Catalan club, who are looking to rebuild their squad after missing out on the league, Champions League and Copa del Rey trophies last season.
"I am very happy," Rakitic told Catalan newspaper Sport. "It is a dream come true."
Barcelona are believed to have agreed a deal in the region of €20 million (£16.1m) for the Croatia international.
Rakitic's arrival is expected to hasten the departure of Cesc Fabregas, with Premier League sides Chelsea, Manchester United and Manchester City keen on the Spain midfielder's signature.
Barcelona appointed Luis Enrique as head coach in May after parting company with Gerardo Martino, who lasted just one season at the helm.