The defender struggled for form last term, though is now back to his best.
"The best thing for a defender is that nobody even talks about you - when rumours start, it's always uncomfortable. That's part of the game though and I have learnt from it. Now I give more value to feeling good. When I came to Barça, everything went so well and it all seemed so easy, but when things go wrong, it helps you to value what you have and become a better player," he said.