"It's very hard to get the chance to play for Barcelona and, whether people like it or not, I'm part of the history of this club," he told RAC1. "I need energy, it's what motivates me; I'm an upbeat, happy person.
"I've always been like that, but because the results aren't what people expect, they need someone to shoot at and I feel shot at. I really believe in energy, I live off this energy and, if you start to create negative energy, things don't flow.
"If this energy doesn't change, I'll probably leave because it wears you down. If I'm to stay this summer, there has to be a change of energy."