Simplify the following text for a Grade 9 native English-speaking person.
Original: Javier Aguirre OnaindÃ a ( born December 1 , 1958 in Mexico City ) , popularly nicknamed El Vasco ( The Basque ) , is a Mexican football manager and former midfielder .
Simplified: Javier Aguirre ( born 1 December 1958 ) is a former Mexican football player .