The Barcelona-based club are sat comfortably in mid-table and Garcia would have no qualms with handing the Primera Liga title to their city neighbours.
"The atmosphere at Madrid at the moment is not the best," he said.
"That could improve before they face us but they should not come here expecting a walk."
Madrid beat Valladolid 4-3 last weekend and Garcia believes that game was a reflection of the problems going on at the Bernabeu.
"Perhaps the environment is not good," he said.
"If not, as before, that could be good for us, given Real Madrid did not make a great game against Valladolid and only won by one goal."