Alves knows victory in the El Clasico will throw the title race wide open.
He told Gol TV: "For me it's what motivates me, competing against the best, not competing against someone inferior. To me, the thing that motivates me in my profession is when I go up against the best, because I train hard to go up against the best.
"If I couldn't compete with the best, I wouldn't be with Barcelona, I would be with my local team because I wouldn't have anyone to challenge me there. I love to compete against the best, that's the thing that motivates me in my profession."
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