The midfielder has been linked with a £60 million move to Manchester City.
"This club has given me and my family everything," he told Esquire. "It would be special to end [my career] here, but this depends on how I perform over the next few years.
"I like to think my best moment is still to arrive and that I can give more."
And Pep Guardiola is the man to ensure success continues.
"The coach is a person who teaches so much and he gives us many solutions when there are problems," he said.