Cech rates the Belgian as the best for his age in Europe.
"I think if you look around Europe and you look at the goalkeepers with top quality that you would expect for a Premier League team, then there are not many as talented as Thibaut is," Cech told the Fulham Chronicle.
"This is one of the reasons why Chelsea bought him and got him under contract because he is one of the best talents in European football. He is only 19 and he's been playing in his home country as a number one choice goalkeeper.
"He managed to win the title which gave him a lot of experience and now he's done really well at Atlético. He has a chance to become the Belgian national team goalkeeper so it's great improvement."