Crystal Palace goalkeeper Julian Speroni says it's too soon to consider Chelsea's Thibaut Courtois the best in the world.

Palace are at Stamford Bridge today.

Speroni said: "It is too early to say whether he can be the best in the world.

"He certainly has the potential to be that but David de Gea has also had a very good season and there are other goalkeepers you could put in that category.

"All credit to him, because it is not easy to adapt to English football so quickly."