The 25-year-old is widely regarded as one of the best players in La Liga, with his performances over the last 12 months drawing a host of interest from across Europe.
The Croatian's current deal expires in the summer of 2015, but he has hinted at a new long-term contract at the Estadio Ramon.
"Is it nicer to play in any of those places than Sevilla? Do you think so? They're teams that you can dream about playing for, but the most important thing for me is to feel comfortable," he told reporters.
"What matters most for me is that the club is happy and if I leave this club one day and say to myself, Ivan it's time for something different, that everyone here is happy with me and we'll decide that together."