"I read that Barca have spent more money this year than they have in any other summer transfer window and the very first thing they told me when I arrived was 'we have to win everything!' so I want to be ready," Rakitic told reporters at a press conference.
"I keep saying that I am not here to replace anyone. I come to Barca to be Ivan Rakitic. Replacing Xavi? He is still at the club.
"I cannot wait to meet all my teammates and to be part of a football style everyone is talking about. I want to learn from them all but I also want to be able to contribute and help them to improve as well."
Barcelona failed to win a major trophy last season, with Real Madrid winning both the Champions League and the Copa del Rey and Atletico Madrid triumphing in La Liga.