Simplify the following text for a Grade 5 native English-speaking person.
Original: Iker Casillas FernÃ ndez ( ; born 20 May 1981 ) is a World Cup-winning Spanish goalkeeper who plays for the Spanish La Liga club Real Madrid and serves as captain for both the Spanish national team and Real Madrid .
Simplified: Iker Casillas ( born 20 May 1981 ) is a Spanish football player . He plays for Real Madrid and Spain national team .