The 19-year-old goalkeeper has also been blown away by the Elland Road faithful.
The teenager joined Leeds on a season-long loan deal from French outfit Lorient in the summer transfer window.
Casilla is the first-choice goalkeeper at the Championship, and Meslier wants to learn from him.
“So if you are going to have to be behind a goalkeeper in the pecking order, better that they are fantastically good. It was not possible to remain at Lorient.
“Kiko is a great goalkeeper and I am coming to learn by his side. Aside from that, if he does not play, I will be there to give my best.”
The youngster added: “In terms of the fans, it is different to what we have in France. It is a religion over here. There are 35,000 fans per match.”
Permanent Leeds United move?
Meslier is a very talented and promising young goalkeeper, and he can develop into a very good player in the coming years.
Casilla is a brilliant goalkeeper with a wealth of experience, and Meslier will improve and progress by learning from him in training.
If the youngster does well in training and impresses head coach Marcelo Bielsa, then he could earn himself a permanent contract.
As for Leeds fans, they are some of the best in England, and it is great that Meslier appreciates the support that the team get for their home and away matches.
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