Simplify the following text for a Grade 5 native English-speaking person.
Original: Juan GutiÃ rrez Moreno , aka Juanito ( born 23 July 1976 ) , is a Spanish footballer who plays for Real Valladolid as a central defender .
Simplified: Juan GutiÃ rrez Moreno ( born 23 July 1976 ) is a Spanish football player .