Thibaut Courtois hits back at Louis van Gaal criticism

Chelsea goalkeeper Thibaut Courtois has hit back at former Manchester United manager Louis van Gaal following his criticism of the Belgian's performance during the Champions League last-16 tie with Barcelona.

Lionel Messi twice put the ball through the legs of Courtois at Camp Nou as Barca pulled off a 3-0 victory in the second leg, with the opening goal coming from a tight angle after only three minutes.

Van Gaal described the error as a "big blunder", but Courtois has suggested that the Dutchman is not qualified enough to pass judgement on his goalkeeping ability.

"When I hear so-called experts talking, I think they know nothing about goalkeeping," he told reporters.

"Van Gaal, for example, such people should not talk about goalkeepers. I know that I am doing well and I am growing to be in top form for the World Cup."

Courtois is currently on international duty with Belgium, who face Saudi Arabia in a friendly on Tuesday night.