Belgium meet the USA in their World Cup knockout game tomorrow.
Mirallas said: "Tim is a superb goalkeeper, one of the 10 best in the world. Along with our goalkeeper Thibaut Courtois he is one of the best at the World Cup and he has lots of great qualities.
"USA have done very well and they are an excellent team. They have very good players, particularly Clint Dempsey, and we have to pay attention to them."
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