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Former Manchester United manager Louis van Gaal criticised Thibaut Courtois’ performance against Barcelona after Lionel Messi twice put the ball through his legs in Barcelona’s 3-0 win over Chelsea.

Van Gaal described the errors as a “big blunder”.

Courtois has reacted to Van Gaal’s criticism of his performance against Barcelona by insisting Van Gaal knows nothing about goalkeeping.

“When I hear so-called experts talking, I think they know nothing about goalkeeping,” Courtois said as quoted on Evening Standard.

“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.”