Fabregas admits that his future Barcelona teammate is "unpredictable" with the ball at his feet, singling him out as the main threat for the Brazilians.
"He seems like a good lad and he's a great player," Fabregas told AS.
"He's unpredictable, decisive, he's great at dribbling, has a great pass and reads the game well. I like him."
Spain are on an unbeaten run of 29 competitive matches and are the current world and European champions.