What happened to Rakitic?

Ivan Rakitic has left FC Barcelona in order to return to Sevilla. Passing a medical yesterday, the Croat rejoins his former club, where Barça signed him from in 2014 following an impressive Europa League win and quality performances at the World Cup in Brazil.

Why is rakitic not playing?

“Saying goodbye to the Croatian national team is the most difficult decision in my career,” Rakitic said in a federation statement. ... He leaves the Croatia squad just nine months before it plays at the postponed 2020 European Championship.